[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/kancolleb_4635.jpg]]
[[caption-width-right:350:Your orders, my Admiral?[[note]]Middle (clockwise from bottom): [[TheHero Fubuki]], [[{{Bokukko}} Mogami]], [[MightyGlacier Ise]], [[BigEater Akagi]], [[ViolentlyProtectiveGirlfriend Ooi]]. Cards (clockwise from bottom left): [[AlwaysNight Sendai]], [[MegaTwintails Tone]], [[TheStoic Kaga]], [[BigBrotherWorship Chikuma]], [[GirlishPigtails Shirayuki]], [[BoisterousBruiser Kitakami]], [[ShrinkingViolet Haguro]], [[FragileSpeedster Shimakaze]]. Note: the rarities of most of the cards in the image do not correspond to their rarities in the game, and Kitakami's base form is a light cruiser.[[/note]]]]

''Kantai Collection'' (艦隊これくしょん (Combined Fleet Girls Collection; lit. Fleet Collection), abbreviated as [=KanColle=]/[=KanKore=] for short) is a free-to-play browser CollectibleCardGame developed by Kadokawa Games and hosted at DMM. The original intention of this game was to have a joint product between the two companies as an experiment outside of DMM's [[DoujinSoft natural]] [[NotSafeForWork habitat]], but the really small investment in advertising led the game into complete obscurity by the time it was released in April 2013. The only other major reason the game was even ''made'' was because it was supposed to appeal to [[UsefulNotes/KatanasOfTheRisingSun Imperial Japanese Navy]] {{Otaku}}, which is a ''really small fanbase''.

Then some personalities from the manga and anime industry took tentative notice of the game, [[{{Moe}} partly due to the designs it used for its characters]], [[NamesToKnowInAnime and partly for the voice cast hired to voice these]]. [[ColbertBump Said personalities shared their experiences playing the game via social media like Twitter]], [[TroperCriticalMass which led to more people getting interested in the game]]... [[GoneHorriblyRight And the rest was history]].

Since release, it has experienced [[TroperCriticalMass a massive surge in both exposure and popularity]], with around 800,000 registered users as of September 2013 alone, a million users come October, and ''two'' million users as of May 2014. The '''massive''' growth of the fandom surrounding it has given rise to comparisons to the [[VideoGame/{{Touhou}} Touhou Project]], particularly among Pixiv users.[[note]]Or ''Anime/StrikeWitches'', for Western ones.[[/note]]

The gameplay is centered upon a card battle game, with individual characters represented by various cards with different attributes. Each of the characters are {{moe anthropomorphism}}s of UsefulNotes/WorldWarII naval warships which are depicted as cute girls, known as "Fleet girls" (艦娘, ''kanmusu'', literally "ship girl"). These personified warships are based on real-life vessels which are explained in detail within the game; the physical characteristics, appearances and personalities of each of the girls correlate in some way to the real-life vessel (for example, ships with a larger displacement tonnage are often depicted with larger breasts, with the notable exception of a few aircraft carriers...and oddly enough a pair of very small light cruisers who get depicted with large breasts). The player takes on the role of an admiral (提督, ''teitoku''), who can be either male or female, and organises their fleets in battle in order to win. Combat is largely automated, and manual actions by the player include micromanagement such as building, repairing, and equipping shipgirls.

Not surprisingly the series has spawned a [[http://i.imgur.com/H8pATqq.jpg large number of official print spinoffs]], serialized in different magazines (''Comic Clear'', ''Comptiq'', ''Dragon Magazine'', ''Famitsu'', ''Monthly Comic Alive'' among a few).

[[folder:The Manga spinoffs]]
# '''''Fubuki Will Do Her Best!'''''
** The official manga most people will be familiar with. The 4koma follows Fubuki as a new recruit in the Fleet Academy. There she learns the basics about being a newly-minted ship girl, though most of the time she just gets exposed to the eccentricities of all the other girls attending the academy with her, ''especially'' the seniors.
# '''''Kancolle Play: Kankan Biyori'''''
** The series running in Famitsu, again with Fubuki as its lead. The comic serves as an introduction to some of the gameplay aspects of the game itself... [[EverythingIsBetterWithPenguins with a penguin]] standing in for the player Admiral.
# '''''Someday As The Seas Turn Calm'''''
** Slice-of-life vignettes focusing on a different ship girl per chapter, each concluding with the featured ship girl's modern [[KaijuDefenseForce Japan Maritime Self-Defense Force]] or Japan Coast Guard counterpart.
# '''''Torpedo Squadron Chronicles'''''
** A series focusing on the adventures of the Akatsuki-class destroyers of Destroyer Division 6, as well as their minders Tenryu and Tatsuta.
# '''''Kancolle: Nanodesu!'''''
** Another series about Inazuma and her sisters, with focus on Inazuma's conviction to save lives, even if its that of their enemies. Notable in how it's not set in a specific Japanese naval district, and is instead centered around a town suspiciously similar to Venice...
# '''''Shimakaze, Girl of the Whirlwind'''''
** Initially marketed as an ecchi comedy, it focuses on Ensign Akai as he's reassigned to the Maizuru Naval District as an assistant to the serving vice-admiral there. There he encounters his new charges, in particular the titular Shimakaze, who's a problem child of a surprising degree.
# '''''Tomarigi no Chinjufu'''''
** An yuri-flavored episodic series, centering on heavy cruisers Kumano and Suzuya. Notable in how it lampshades how the admiral ''never'' seems to be around, and instead leaves the day-to-day running of the base to the fleet girls themselves.
[[/folder]]

On top of those, there are several official manga anthologies.

There are also a few official LightNovels written for the franchise.

[[folder:The Light Novels]]
# '''''Kagerou, Setting Sail!'''''
** A somewhat serious entry in the franchise, this story follows Kagerou, a trainee at Kure, as she is transferred to the more front-line naval district of Yokosuka. Specifically set in the modern day of our world, or at least a place really similar to it.
# '''''1st Carrier Division, Heading Off!'''''
** Unrelated to the series above, this entry focuses on carriers Akagi and Kaga, as well as their charges (Ushio, Akebono, Oboro, and Sazanami), as the increase in Abyssal attacks force them to transition from merely training and expedition duty to the front lines south of the mainland.
# '''''Bonds of the Wings of Cranes'''''
** Also unrelated to the two other light novel series, Zuikaku awakens as a human girl, yet with all the memories she had while she was a ship, in a world that's similar but definitely ''not'' the same as one she left behind.
# '''''Day at a Certain Naval Base'''''
** Similarly unrelated to the other books, this series instead follows the day-to-day lives of the fleet girls as they go about their business at their naval base. More of an anthology of stories that all happen to be set in one place.
[[/folder]]

The series was subsequently added to the TabletopGame/WeissSchwarz line-up, with the majority of its characters appearing as playables.

[[Anime/KantaiCollection An anime adaptation]], by Studio Diomedea, is scheduled to air during the Winter2015Anime season. There will be a handheld port as well, tentatively titled ''Kantai Collection: Kai''. The first preview, released on November 2014, can be seen [[http://youtu.be/8tEvFFtSh0E here]], and it looks like it will contain all new content up to the current (as of this edit) Fall 2014 event.

Compare to Manga/ArpeggioOfBlueSteel, which also features female personifications of [=WW2=]-style battleships, and is the subject of a special collaboration event between the two franchises for Winter 2013. Not to be confused with Anime/SengokuCollection, which has genderflipped Sengoku warlords instead.

For tropes unique to the anime, please visit [[Anime/KantaiCollection the anime page instead]]. For specific character-related tropes, please refer to the [[Characters/KantaiCollection Character Sheet]].

Beware the following tropes and the Character-specific tropes need constant updates and may give you outdated information about the game.
----
!!Kantai Collection features the following tropes:

[[foldercontrol]]

[[folder: Tropes A-E]]
* AceCustom: A variant of the [[http://en.wikipedia.org/wiki/Aichi_E16A Zuiun seaplane]], operated by the [[http://en.wikipedia.org/wiki/634th_Naval_Air_Group 634th Naval Air Group]], offers improved anti-ship and anti-submarine stats compared to its standard version.
** The [[http://kancolle.wikia.com/wiki/Tenzan_Model_12_(Tomonaga_Squadron) Tenzan Model 12]] operated by Tomonaga's group, whose stats even surpass the Ryuusei Torpedo Bomber.
** And the [[http://kancolle.wikia.com/wiki/Suisei_(Comet)_(Egusa_Squadron) Suisei]] operated by Egusa Takashige, also known as the "[[RedBaron God of Dive Bomber]]".
** There is also the 601st Naval Air Group, whom belongs to Unryuu.
* AcePilot: The "experience" version of the low-tier planes in game, which possess even better stats than some of the high-tier planes.
* AcronymAndAbbreviationOverload: Since the introduction of the game, the English fanbase has used the [[http://en.wikipedia.org/wiki/American_Hull_classification_symbol#United_States_Navy_hull_classification_codes US Navy hull class codes]] as a type of localization when referring to the ships (which the game itself also uses in its loading screen). It is very common to see ''many'' acronyms in chat channels, let alone across ThisVeryWiki and TheWikiRule.
* AlternateCharacterReading: The December 2013 {{Crossover}} event added in two I-401s: the Manga/{{Arpeggio|OfBlueSteel}} Iona pronounces 401 as Yonmaichi but Kancolle's I-401 (the reward for clearing the event) pronounces it as both Yonmaichi and Shioi.
* AlternateUniverse: Explicitly said to be the setting of the '''Bonds of the Wings of Cranes''' light novel. It has similar locations, but as Zuikaku quickly learns, not only did World War 2 not happen, ''Japan doesn't exist as a sovereign country''.
* AnachronismStew: While the period in which the game is set is not specified, many found it awkward when Imuya mentioned Smart Phones.
** Musashi has actually shown hints of being technologicallly savvy, and is depicted as being able to catch onto the present popularity as well. But considering what has been mentioned above, it'll take a while until [[WordOfGod DMM & Kadokawa]] settle down with a proper period.
-->'''Musashi''': ''Admiral, [[BreakingTheFourthWall it would seem appropriate to quit your browser window here if you are busy.]] Oh, you were actually planning on our next move? I apologize for jumping into conclusions."
** There's also Yuubari mentioning recording shows that air at midnight. See example for the Otaku entry down below.
* AnimeHair: Despite the high number of characters with [[YouGottaHaveBlueHair exotic hair colors]], only Jun'you, with her ludicrous spiky mane, has hair worthy of the tag.
* AntiFrustrationFeatures: Not in evidence during the earlier versions of the game, but many were quietly added over time when the staff realized the ridiculous rates of attrition some players were experiencing, particularly during events. Since then many, ''many'' quality-of-life features were added to prevent admirals from rage-quitting from sheer annoyance. One example of this is that ships cannot sink as long as they start an enemy encounter with at least orange HP (more than 25% of full HP). And before fleets were automatically made to retreat once a flagship is dropped to red or critical status to reduce subcheesing effectivity, flagships couldn't sink under ''any'' circumstances. (It is currently not known whether this still applies to the flagship of the escort fleet when you sortie under Combined Fleet rules, since the automatic retreat only applies to the flagship of the main fleet.)
* AnyoneCanDie: Prospective admirals beware, once a ship girl is sunk (when their HP is reduced to zero), [[LostForever they're not coming back]], unless you happen to have a special item equipped on her beforehand (damage controls, or damecons; they can only be bought using real-world money!) to make an emergency repair on-location. Even then, it's a one-time deal, and if the same kanmusu gets critical damage again (such as if you advance to a new node after that battle), that's it for her (unless you have ''another'' damecon on her, of course, but most people only equip one on a ship at most).
** BackFromTheDead: Sometimes, a GoodBadBug may occur from the game disconnecting on you and the ship may end up being still with you, albeit with 0 HP, like in [[http://tieba.baidu.com/p/2845917476 this case.]] However, it doesn't work if you initiate the disconnection.
* ArcherArchetype: The entirety of the Standard Aircraft Carriers (like Akagi), as well as 3 of the Light Carriers, are portrayed as samurai archers.
* ArtEvolution: One can track the progress of an artist's improvement (or for some artists such as Yadokari, the opposite) by just how ''different'' the art of a remodelled ship compares to its default sprite. Examples are Kongou and Hiei (although many disliked Kongou's "monkey ears" art), Shiratsuyu and Murasame, Kinugasa, Naka and Jintsuu... But a standout example is Hiyou, whose Kai looked like ''it was drawn by another artist altogether''. That was just how much the artist improved.
* ArtisticLicenseShips: No, [[http://en.wikipedia.org/wiki/Crossing_the_T T-crossing]] does ''not'' work that way. When you T-cross the enemy fleet, you don't take extra damage in return, and when you get T-crossed, you don't take reduced damage either. This is possibly one of many AcceptableBreaksFromReality for the sake of game balance, seeing as the game got most other facts right.
** Before the update on 28 July 2014, fast battleships were unable to equip AP ammo, despite the fact that the Kongou-class did carry them historically.
* AwesomeButImpractical: Heavy Cruisers for starter admirals, and Carriers and Battleships for experienced ones, due to their expensive maintenance costs that can ''really'' put a dent on an admiral's resources, and significant repair times whenever they're damaged. Superbattleships Yamato and Musashi take this to extremes, as they use as much as '''three times the resources''' to refuel and re-arm, and take twice as long to repair even when compared to Nagato, who is herself ''already'' a massive resource sink.
* BareYourMidriff: Shimakaze, Yuubari, Ooi Kai 2, Kitakami Kai 2 and the Nagato-class sisters.
* BattleThemeMusic: The game has dozens of battle themes, especially ones for a particular map.
* {{BFG}}: The 46cm (18-inch) Triple Cannons which are seen in the Yamato-class, which are craftable in the game. They have longer range than the 41cm and the 35.6cm cannons, and aside from having the highest firepower and AA stat, were also capable of being an AA gun as well, before a revamp to AA mechanics removed this function.
** Later update added a much [[BiggerStick bigger gun]], the 51cm Prototype Twin Cannon design for the A-150 battleship aka "Super Yamato"
* BigSisterInstinct: The lead ships of some ship classes act as this for their sisters. Fusou is an example of this, as she thinks of her sister Yamashiro's well being most of the time.
-->'''Fusou''': ''Please look after my younger sister Yamashiro's modernization as well."
* {{Bokukko}}: Mogami, Satsuki, Shigure, and Z1 Leberecht Maass.
* BoobsOfSteel: Naturally comes with being the personifications of warships, especially more so on the more well-endowed ones. Yamato sports an almost ''[[ExactlyWhatItSaysOnTheTin literal]]'' definition of this.
* BornLucky: While it's still unclear exactly what the LuckStat actually ''does'' in the game (its only known effect is the probability of a [[SuperMovePortraitAttack "Cut-In" attack]]), an observant admiral will notice that certain ships will have higher-than average luck. Those who ''also'' happen to have more than a passing knowledge of World War 2 naval battles will note that the majority of these ships either lasted to the closing months of the war (Aoba, Haruna, Ise, Hyuuga, Ooyodo, Hatsushimo), actually survived the war (Yukikaze, Nagato, Houshou, Jun'you, Kitakami, Myoukou, Ushio, I-58, I-401, Sakawa, Taigei/Ryuuhou, Prinz Eugen), somehow avoided or survived damage that had easily taken out their sister ships during a particular action (Hiryuu, Zuikaku) before they themselves got sunk, were {{Sole Survivor}}s of certain major engagements (Yukikaze again, Shigure), sank in shallow waters where it was easier to raise them for scrap or were run aground or otherwise not actually technically sunk (Nagatsuki, most of the ships that were lost near the end of the war) or simply were the last of their classes to sink (Kasumi, Zuihou). Yukikaze in particular not only survived more major battles than she had any right to, but she also served as the flagship of the Republic of China Navy before finally being dismantled in 1970. Her luck stat of 60, higher by far than any other ship in the game, reflects this.
* BornUnlucky: Much like the previous entry, an admiral will ''also'' notice ships with lower-than-average Luck scores (lower than 10). More often than not, these are references to their unfortunate fates, either due to faulty design choices, circumstance, or ''both''. Many of the ships in the latter category either sunk during their initial sorties (Taihou, Bismarck), or never got to participate in battle at all (Mutsu, blown up while in port). And despite having average luck in the game, Shoukaku is sometimes lumped into this group as well, due to the fact that she took more than her fair share of damage in the fleets she was in.
** For some reason, Yamagumo has even lower luck than the other destroyers, being the first destroyer to have less than 12 luck on remodel.
* BraggingRightsReward: The Winter 2015 event adds the First Class Medal, which is displayed beside your player name whenever its displayed on Server Lists or PVP lists. You can only get it if you complete the event on Hard Mode on its final map, already infamous for its extreme dose of RandomNumberGod-influenced shenanigans.
* BreakingTheFourthWall: Numerous ship girls love doing this through their spoken lines, though some of them are more blatant about it (the Yuugumo-class Destroyers for example) than others.
* BribingYourWayToVictory: Some account enhancements (like extra slots in the dock), a good chunk of the consumables in the in-game store, extra resources, and high-end furniture that require custom furniture craftsmen can only be purchased through points, which can only bought via real-world money. Can be particularly galling for players, as while the other contents of the store can be found via expeditions, one important consumable (Emergency Repair, which prevents unplanned sinkings), can only be bought this way.
** Even so, all the items mentioned above are entirely optional and players have the option to not resort to purchasing them in order to win the game. Given that getting the ship daughters involve either being lucky with drops, building, or clearing (often extremely hard) certain levels during timed events, paying with real money does not really help either (unless you pay A LOT).
* BrutalBonusLevel: 2-4? Just [[GameBreaker subcheese]] it or use [[ThereIsNoKillLikeOverkill 4 BBs 2 CVs]]. 3-4? Same. 4-4? 5-3? You just have to beat the RNG. The bonus level 5-5, which introduces Re-class battleships (which can attack with planes ''and'' torpedoes, can attack submarines with said planes even at night, has insane HP and armor comparable to demon princesses, and only its normal form lacks ''pre-emptive'' torpedoes) and flagship Wo ''Kai'' carriers (which are simply a much stronger version of standard flagship Wo-class aircraft carriers), makes '''every other level''' in this game look extremely easy. Of course, [[http://www.nicovideo.jp/watch/sm23141876 S-ranking the boss node]] isn't impossible, but...
** UpToEleven: While maps normally have star difficulty at most 9, world 5-5 have 11 as a larger star indicate 10 stars.
** 2014 Summer E-6, Autumn E-4 and 2015 Winter E-4 all have 12 stars, but only the former is absolute nightmare(documented elsewhere)
** 2015 Winter E-5 (A-class) now stands as the hardest ever map ever conceived, with many Admirals upon seeing Two Battleship Princess (same as Summer E-6 final boss) now as just escorts to the more powerful Battleship water daemon, expressed outright disbelief.
* BuxomIsBetter: The Takao sisters for Heavy Cruisers, Tenryuu and Tatsuta for Light Cruisers. In the former's case it's even lampshaded by Atago in the game's database section, where she mentions how her... [[UnusualEuphemism fuel tanks]] are heavy and make her shoulders stiff.
* {{Cap}}: A soft cap (100 against submarines, otherwise 150 for day battles and 300 for night battles) applied after pre-cap modifiers, where damage done exceeding the cap will receive diminishing returns (the excess is square rooted and added to the cap, making the effective soft cap 1 higher than the mechanical cap).
* CaptainErsatz: Some ship girls look similar to certain VideoGame/{{Touhou}} characters. [[http://kancolle.wikia.com/wiki/Kiso Kiso]] looks a ''lot'' like Murasa with an EyepatchOfPower, especially after her second remodel. In addition, Suzuya has some similarities with Sanae, Yayoi resembles Patchouli (complete with crescent moon [[HairDecorations hair clip]]), and Akitsu Maru outright looks like she was designed by ZUN (although she wasn't), although she doesn't much resemble any currently existing Touhou character (except for maybe Yoshika).
** Not to mention that while all of the Kongou-class wear unconventional shrine maiden outfits reminiscent of Reimu's, Haruna gets bonus points for wearing a [[WholeCostumeReference red and white version.]]
* CastHerd: With the huge cast as well as the various historical and in-game interactions, there's several ''dozens'' of groups available. This goes from ship types[[labelnote:*]]Destroyers, Aircraft Carriers...[[/labelnote]], ship classes[[labelnote:*]]Fubuki-class Type III(Akatsuki-class), Shoukaku-class...[[/labelnote]] and divisions[[labelnote:*]][=DesDiv6=], [=CarDiv5=]...[[/labelnote]] to historical fleets[[labelnote:*]]The Mikuma fleet used at Savo Island[[/labelnote]] and ship-girls who look like each other[[labelnote:*]]Takao and Atago, already sister ships, have been collectively called the "Takao sisters" due to having identical outfits and visible "ship parts", while their "younger sisters" Maya and Choukai form another pair with identical clothes and turrets. The repair ship Akashi and light cruiser Ooyodo form another such cast herd despite there being no connection between their real-life namesakes: they wear identical outfits and also both started out as {{NPC}}s (running the item shop and assigning quests, respectively) before becoming playable.[[/labelnote]].
* ChainmailBikini: Yamato, when getting damaged, [[http://i.imgur.com/qwNRKtE.png shows her metallic Type 91 Armor Piercing Shell Coconut Bra dropping out]]. It made her attire look...really paper thin there.
** The official 4-koma played this as a joke as well. Naturally Yamato is very uncomfortable with that revelation...
*** A GeniusBonus for historians - Yamato's guns were originally specified as much smaller than the 46cm monsters they truly were. Seems that Yamato didn't want to reveal the secret of her...shell size.
* ClingyJealousGirl: Many ship girls are like this, either to the Admiral, or to their sister-ships. Kongou is a well-known example of the former, while Torpedo Cruiser Ooi is a good representative for the latter.
* CloningBlues: Given how the game functions somewhat as a collectible card game, it's inevitable that a player will get multiple copies of a ship girl if they play long enough, particularly the more common types like destroyers. Not too surprisingly, this gameplay mechanic has made its way into both official media and fanwork, in the form of "clones", where it's played for either comedy, drama, or (in the case of Famitsu's ''Kancolle Play'' manga) '''both'''.
** ''Kancolle Play'' featured a whole gaggle of Ooshio clones. While for the most part they were treated as comic relief, with them filling odd roles at the base (like being Naka's backup dancers during her concert), the comic also makes it quite clear that each Ooshio was a unique individual -- which makes the fact that one of them had to be scrapped all the more heartbreaking.
* ClothingDamage: A visual representation of your ships' condition, if they are suffering from moderate or major damage, complete with smoke coming out from their icons. Under minor damage though, their clothes and weapons are intact, although there will still be smoke.
* TheComputerIsACheatingBastard: [[http://kancolle.wikia.com/wiki/List_of_equipment_used_by_the_enemy You see this equipment list]]? All of these stats used by the enemy are ''way'' higher than [[http://kancolle.wikia.com/wiki/Equipment the player's counterparts]].
** On the other hand, the enemy lacks the AntiFrustrationFeatures the player has. Not to mention that in every engagement, the player always gets to attack first.
* CoolBigSis: A lot of lines heard from the game can evoke this particular trope. Especially Hiei's desire to be like Kongou, or Yamashiro's admiration towards her sister, Fusou.
* CoolPlane: Since this is a [=WW2=]-based game. Most of the IJN planes, along with the German Stuka, are usable equipment.
* CosmicPlaything: While not so obvious in the game, Shōkaku hints that she's one unlucky girl (and is depicted by fans as one, especially when receiving minor damage), thanks to how she was treated during the war, by Japanese accounts. Her database even introduced her as "the ship that received terrible fate during that war (Battle of the Philippine Sea)".
** Displayed prominently in the 4-koma where, in quick succession, she gets pooped on by a passing bird, hit on the head by a thrown rock, and has an empty pail dropped on her. The fact that she's such a magnet for misfortune (aside from the obvious real-world [=WW2=] references) caused Kaga to be ''terrified'' of her, once she learned that both Shōkaku and Zuikaku were joining the fleet.
* CovertPervert: Shirayuki in the 4-koma, which causes Fubuki to be more than a ''little'' worried. Also Sendai, who likes seeing other girls get wet in the rain as it makes their underwear visible.
* CrackIsCheaper: [[invoked]] Actually {{invoked}} for once. Kadokawa [[http://en.wikipedia.org/wiki/Kantai_Collection#Financial_reception_and_sales_figures has noted]] that the browser game proper is a "nearly unprofitable" business due to the many partnerships (which includes [[DoingItForTheArt voice actors, guest artists, and many other things in the game]]), so they rely on other forms (including {{Light Novel}}s, Manga, special figurines, and many other things) to generate a profit. The game, however, will remain FreeToPlay as long as it is up.
* CriticalExistenceFailure: Averted, performance wise. The kanmusu can still perform well as long they have not taken moderate damage (50% or less, but more than 25% of their overall HP, shown as orange, performance reduced to 70%) or major damage (25% or less of their overall HP, performance reduced to 40%). ScratchDamage taken, on the other hand...
* CriticalHit: It does an extra 50% of the usual damage a normal hit would do, before taking armor into account. However, for some reason, normal hits dealing 40+ damage are also called "critical hits" in the game, and critical hits dealing less than 15 damage do not register as such.
* DarkerAndEdgier: The two light novels -- '''Kagerou, Setting Sail!''' and '''Bonds of the Wings of Cranes''' -- are much more serious than some of serialized manga and, indeed, fan-made doujinshi. Neither, for example, mince words with the fact that fleet girls can and '''have''' died, with ''Kagerou'' in particular mentioning off-hand that the number of fleet girls slaughtered before the events of the novel started numbered in the ''hundreds''.
* DavidVersusGoliath: Invoked by mission 3-2, where the boss node can be only accessed by a fleet of destroyers, the smallest class of warship (whose high evasion values are offset by having the lowest damage, hit point, and armor values of all non-submarine unit) available to an admiral. They're expected to battle ''elite battleships and heavy cruisers''. The fact that many destroyers (like Akatsuki, Inazuma, Ikazuchi, and Hibiki) are portrayed as middle-schoolers or younger just strengthens the impression, especially since the Abyssal Fleet ships they're going to battle look like adult women or saurian monsters.
* DiscardAndDraw: The battleships that remodel into aviation battleships (Fusou and Ise classes) suffer a loss in firepower in exchange for improvements in other stats, particularly the ability to carry more planes. (However, Fusou-class do get even higher firepower on their second remodel.) The Chitose class seaplane tenders lose the ability to equip seaplanes as well as the ability they gain from their second remodel (equipping midget submarines for a pre-emptive torpedo strike) in their third remodel where they become light aircraft carriers, which gives them the ability to equip better planes. Taigei also undergoes a similar process when she becomes Ryuuhou, except that Taigei can't equip seaplane bombers or midget subs.
* EldritchAbomination: Many of your enemies fall into this trope. Sure some sport a more humanoid form, but that doesn't make them any less of a monster.
* EmbarrassingNickname: Yamato is nicknamed "Hotel Yamato" or simply "Hotel", which embarrasses her from time to time. The reason once again came from the fact that Yamato had a real history of being treated as one - when she was secretly built by the Imperial Japanese Navy, they had the mindset of "Aircraft Carriers are the best, Battleships are just a bonus/an alternative". That, and her status as a flagship along with her high consumption, causes Yamato to spend most of her time at the bridge until 1944 (Battle of Leyte Gulf), leading her to be nicknamed "Hotel Yamato". Historically, the term is also taken from [[http://en.wikipedia.org/wiki/Yamato_Hotel a real Yamato Hotel which was located at Manchuria (presently Dalian, China)]].
** Interestingly, although it was considered a luxury to ever spend a night in the ship's bridge, the purpose of Yamato stayed true to the core. Still, she was quite unfortunate, participating mostly in escort missions instead of offensive operations.
--> '''Yamato''': 'H...Hotel!? N-No, you're wrong!"
** The whole Yamato being treated as a hotel is played with in the official 4-koma manga, like how she was equipped to ''manufacture ice cream'' and was fully air-conditioned (both of which were true of the real battleship; back then, air conditioning was still getting phased in to the general public, but was considered a ''luxury''). The little destroyer girls loved hugging her as a result.
* EngagementChallenge: Under the marriage system, you have to complete a few quests (the last of which involves a fleet with a level 90-99 ship getting S rank at the 2-3 boss node) to obtain a set of wedding ring and marriage documents... or you could buy it for 700 yen at the cash shop. In addition, the ship you wish to marry must be level 99. Benefits include slightly increased stats (including HP), reduced fuel/ammo consumption by 15%, and the ship instantly becoming level 100 with a new level cap of 150.
** LiteralMinded: When the marriage system was first announced, it was called ''kekkon kakkokari'' (ケッコンカッコカリ), which means marriage (temporary) and implied that "marriage system" was just a placeholder name. ''Kekkon kakkokari'' would later go on to be the official name of the system on implementation.
** LoveConfession: The marriage system is chock full of [[http://www.youtube.com/watch?v=VzqpKaFPpVI these]] [[http://www.youtube.com/watch?v=1UiFzXHTZPg lines]]. Some have the ships "confess" to you, some accept ''your'' "confession", and others reject you. Still others have lines which have nothing to do with confessions.
** MarryThemAll: You can marry more than one ship, so this is possible if you wish to do so, but you will have to buy the cash item from the cash shop, each costing 700 yen or around 7 USD. As only one can be obtained free of charge, it means doing a literal MarryThemAll (around 160 as of March 2014) [[CrackIsCheaper will cost more than a whole grand]].
** VisualPun: A lot of people have assumed this marriage mechanic to be Kancolle's answer to "[[MemeticMutation mai waifu]]". This includes ''many'' fanartists drawing the girls in wedding dresses.
*** ThereIsOnlyOneBed: The pinnacle of the marriage system is getting the couple's futon, which requires finishing the last two marriage quests.
* EyepatchOfPower: Worn by light cruisers Tenryuu and Kiso.
[[/folder]]

[[folder: Tropes F-J]]
* FakeDifficulty: LuckBasedMission and RandomNumberGod aside, if you have enough submarines you can easily cheese out certain stages, some of which would be much more difficult to clear otherwise. In particular, if you got a submarine in the process of clearing 2-3, [[ThatOneLevel 2-4]] becomes a BreatherLevel instead. (At least that was the case before ASW equipment got buffed, but all you need now is just a bit more luck than before. Or [[GameBreaker Iona]].)
** The 2014 Summer Event turned to be a particularly unforgiving example of fake difficulty. [[LetsSplitUpGang Due to the nature]] of the [[http://en.wikipedia.org/wiki/Aleutian_islands_campaign real-life event]] it's [[http://en.wikipedia.org/wiki/Battle_of_Midway based on]], ships used in Operation AL ( maps E-1 and E-2) couldn't be used in Operation MI (maps E-3, E-4 and E-5). In addition, operation MI forced you to deploy ''two'' fleets at the same time, one consisting of mostly carriers and another one with mostly light ships. To further complicate matters, the final map E-6 locked out ships used in any of the previous event maps. As a result of all this, in order to just have a chance to complete the entire event you essentially needed '''four full fleets''' of adequately powerful ships (''Six'' if you wanted Support Fleets in both midway and boss stage of E-6). On top of all that, prior to the start of the event the only thing the dev team revealed about the whole system was that ships used in one operation couldn't be used in another, and made no mention of Midway's dual-fleet system or the extra stage which forbade any AL/MI ships. Considering that each map haad several variants of suitable team compositions, the amount of shipgirls involved in the event for an elite player may well surpassed ''40''.
*** Elaborating on this three-front war: Operation AL's first map was fairly easy regardless of the difficulty level. However, E-2, the last map of AL, which the devs even described as 'beginner-friendly' prior to the event, is generally regarded as one of the hardest map of the entire event, especially if your HQ Level was above 60. One of the main difficulties of AL was that the branching rules pretty much forced you to use light/medium ships only. While it was possible to use heavy fleets, you then had to face either more battle nodes or the stronger enemies. Or both. Not to mention that you couldn't use those ships in later event maps. Operation MI, while a whole lot easier than AL thanks to being able to use all the heavy ships at your disposal and bring 12 ships instead of the regular six, turned into a nightmare for your resources because of the very same reasons. One fleet full of heavy ships can already be quite costly, but two fleets deployed at the same time meant an even higher resource consumption. Bauxite supplies usually suffered the most, since almost all enemy fleets contained lots of aircraft carriers with very strong planes. Those that didn't were either submarine nodes or night battle nodes, which didn't make things easier. Also, ships like Akitsu Maru, who were previously deemed useless except for their equipment, actually made things easier. However, the last map, E-6, was a nightmare. First of all, no combined fleet, only your regular fleet of six ships. The first battle node pitted flagship-type carriers and battleship (among other things) against you, and it got progressively worse from there. The "safest" route was over a submarine node and pre-boss node that contained ''the final boss of the previous map as a regular enemy but still at full strength''. To secure this route you had to use two light aircraft carriers, who due to their weak armour got wrecked easily. The alternative was reaching the boss via night battle nodes, where even mere destroyers could wreck your battleships easily. Speaking of the boss node, in order to even reach it your fleet was required to have a very high LOS rating. If you failed to meet that requirement you were sent to a dead end. And even if you managed to reach it, you found out that the final boss was none other than the [[ThatOneBoss Battleship Princess]], the most hated enemy in the entire game due to her ridiculously high stats and ability to critically damage even your best ships in one shot. Beating this map required you to deal damage to her that amounted to a total of ''ten times her health bar'' (thankfully chip damage was allowed). And if the boss gauge had been depleted enough that you needed only one more kill to break it? If your HQ Level was below 100 it was random, but above 100 it was guaranteed that the game pitted '''''two''' Battleship Princesses'' against you.
*** To further complicate matters, the event outright punished you for trying to figure out branching rules. When faced with a new map, the general course of action is to use different ship types and combinations and see where your fleet gets sent. However, due to the ship locking mechanic, this meant that, for example, you could send ships to Operation AL, only to realize that they were practically useless in it and were actually needed for Operation MI, but now you couldn't use them in MI because you'd already sent them to AL. Keeping two operations in mind when organizing fleets was already bad enough, but with E-6 thrown into the mix it was a punch in the face for those who didn't have a large number of ships at their disposal. As a result of this multiple-front war many players have started training two ships of the same name, which would have been insane in the past when Special Events had only one front, since two ships of the same name can't be in the same fleet.
* FashionableAsymmetry: Several ship-girls have intentionally asymmetrical designs (The Tone-class and many of the Fleet Carriers per example) but for a few, this trope is invoked and justified. Several of the Operation Ten-Go participants (especially the ones who make their debut more recently) wear only a left thighhigh, as if to emulate Yamato, who wears such legwear by default, either from the get-go or after a remodel.
* FlawlessVictory: A special condition in sortieing where you defeat your opponent while taking no damage on your side. [[FakeDifficulty Due to how RNG works]], this can be either easy (do ThereIsNoKillLikeOverkill) or absurd (the possibility of you actually doing this on a hard Boss Node approaches zero quickly). Although there is no additional benefit in doing so (you receive the same experience and morale bonus as normal S rank) and is more of a BraggingRightsReward.
* FoolishSiblingResponsibleSibling: Despite being the instructors of the Destroyers in the 4-koma, Ise is regularly characterized as far less serious than her sister Hyuuga, the latter of whom actually got annoyed at Ise's need to be the center of attention.
* ForeignersWriteBackwards: Due to the history of how traditional Japanese is written, Shimakaze can also be written as "Zekamashi". Inazuma's ([[NeverLiveItDown not]]) verbal tic "Nano-desu!" is also played with, becoming "Sudenona!".
* FragileSpeedster: Destroyers in general. They possess a base speed of Fast, and have high base Evasion rates, but have low Armor and Hit Point values.
* GenderBlenderName: Comes with the territory of ships being referred by name and [[Manga/ArpeggioOfBlueSteel traditionally referred to as girls/women/etc.]], really -- you won't see many ''Takao'', ''Atago'', ''Kongou'', and ''Musashi'' as girls' first names. Played completely straight for the Kriegsmarine ships, however, who actually ''are'' named after men.
** On the other extreme, there are ship girls who simply happen to have genuine feminine names. Examples include Fubuki, Hibiki and Chitose.
* GenkiGirl: Kongou is the most famous example of this trope. But some characters like Nenohi, Ikazuchi, Ooshio, and Naka count as well.
* GlassCannon: Any ship with a high attack power but relatively low HP and Armor value is this, like Yuudachi or the Torpedo Cruisers.
* GoroawaseNumber: I-168 and I-58 have chosen to do this with their names to make them easier to pronounce and to make them sound more like actual names. Thus, I-168 and I-58 are also known as "Imuya" and "Goya" respectively. For the same reasons, I-19 and I-8 are called "Iku" (no, not that [[VideoGame/{{Touhou}} Iku]], and not [[Manga/ShinryakuIkamusume that one]] either) and "Hachi".
* GottaCatchThemAll: It's called Kantai '''Collection''' for a reason. There's even a library detailing the ships/equipment you got before. Naturally, the ships/equipment you have never got before are left blank.
* GratuitousEnglish: ''Kongou'', who enthusiastically shouts lines like "[[http://www.youtube.com/watch?v=SX6lObHHd1Y BURNING]] [[http://www.youtube.com/watch?v=QAB7lypNPAk LOVE!]]" for her attacks. Based on the fact that the real-life Kongou was built in England.
* GratuitousGerman: I-8, who is then followed by ''actual'' Kriegsmarine ships Z1, Z3, and the Bismarck.
* GratuitousRussian: Hibiki sometimes talks in Russian. She has more lines in Russian after she gets her final upgrade into the ''Verniy''.
* GuestStarPartyMember: For the collaboration event with Arpeggio, there was Iona, and later on, Takao and Haruna, all three of which were available only for the duration of the event.
* HairDecorations: Unsurprisingly, they are all over the place. Some of the most impressive examples come from the battleships with Yamato's "Sakura and Radar Mast" thing going on, the Fusou-class' pagoda mast being portrayed as these, Nagato and Mutsu's head apparatus and the Kongou-class' signature winged headset.
* HeroicBSOD: As shown in the 4koma, many ship girls bear some sort of trauma related to how their real-life counterparts got sunk -- like Akagi's issue with everything even close to being related to the Battle of Midway, or the abject fear many Destroyers show for Submarines.
* HiddenBuxom: Ushio has a nice stack, which can only be seen when she [[http://puu.sh/4NXG2.png receives]] critical damage. Yuugumo and Naganami also play this straight. To a lesser extent, Suzuya, after upgrading.
* HimeCut: Hatsuyuki. Murakumo, Yuudachi, Hiyou and Shouhou have decorated variants. Also if you let her hair loose, Kitakami's hairstyle is considered one as well.
* HistoricalInJoke[=/=]ShownTheirWork: All over the place, ''especially'' apparent in the 4-koma. That said, the real-life references of the ships each girl represents are more often than not played for {{moe}} points instead.
* HotBlooded: While most kanmusus have lines that show their spirit and passion when fighting, Suzukaze is particularly high spirited and hotblooded in almost everything she does.
* HypocriticalHumor: In one manga, Akagi, the "Bauxtite Queen" herself, notices Shimakaze is helping herself to an absurdly large amount of food and cautions her against wasting resources. Meanwhile, Akagi's tray has three times the amount of food that Shimakaze's does!
* IfItsYouItsOkay: Most (but not all) of the ship girls towards the Admiral in varying degrees.
* ImprobablyFemaleCast: Comes with the territory.
** WorldOfActionGirls
* InferioritySuperiorityComplex: Kaga towards the Shōkaku-class sisters (Shōkaku and Zuikaku). In real life, the Kaga was the slowest and generally worst-designed (but had some of the most experienced crew) of Japan's large fleet carriers, while the Shōkaku-class were arguably the best and certainly the most advanced pre-war design (with a relatively inexperienced crew).
* ItemCrafting: There are two usual ways to gain additional ship girls in the game. One is via random drops during sorties or expedition. The ''other'' way is constructing one, a much more time-consuming process that uses up resources (fuel, ammunition, steel, and bauxite). Specific resource ratios during construction yield higher chances of getting "rare" ships (like Shimakaze or Yukikaze), or even ship types (in case of carriers). Even so, to get exactly what you want is a hit-or-miss thing.
* JackOfAllStats: Ships belonging to the Heavy Cruiser class tend to be this. They are average in every stat and can hit anything in the game (except submarines) with suitable equipment.
** MasterOfNone: Occasionally falling into this category for the same reason, as you can only field no more than six ships, regardless of types, in your fleet.
* JapanesePoliteness: Haruna and Hōshō. They stand out when compared to other characters in the game.
* JapanesePronouns: The standard here is still "Watashi" (私). However, with the number of characters with odd speech patterns, there's also a good number who also use other pronouns to refer to themselves.[[note]]Also, quite a few don't have any lines outside of their introduction in which they refer to themselves at all, or always refer to a different person than themselves or the admiral.[[/note]]
** "Atashi" (あたし): Jun'you, Kako, Maya (those three have rougher speech patterns, though), Sakawa...
** "[[{{Bokukko}} Boku]]" (僕): Satsuki, Shigure, Mogami, Z1 Leberecht Maass.
** "Jibun" (自分): Akitsu Maru.
** "Ore" (俺): Tenryuu, Kiso.
** "Uchi" (うち): [[KansaiRegionalAccent Obviously]], Kuroshio and Ryuujou. Urakaze as well.
** "Wagahai" (我輩): Tone.
** "Warawa" (妾): Hatsuharu, in line with her [[AntiquatedLinguistics antiquated speech patterns]].
** "Watakushi" (わたくし): [[TheOjou Kumano]].
* JokeCharacter: Maruyu, a supply submarine introduced during the December 2013 update. Even when maxed out her stats are all ''still'' below 10 in value, and she can't mount ''any'' equipment until reaching level 20 and being remodeled. As such, her only viable use in combat is usually just to soak up hits and force enemies to ignore the rest of your fleet. Outside combat she can also make expeditions slightly more efficient due to having even lower resources consumption than the other submarines, but her real purpose (according to the Developers) is in modernization to increase other ships' luck stats.
* {{Joshikousei}}: While many of the ship girls have outfits that invoke this look, it's more obvious in the case of Kumano and Suzuya.
[[/folder]]

[[folder: Tropes K-O]]
* KansaiRegionalAccent: Kuroshio and Ryuujou. Neither are [[TheIdiotFromOsaka particularly stupid]], though.
* LegacyCharacter: Quite literally in the '''Kagerou, Setting Sail!''' light novel, as the identity of a ship is something that is passed on from one girl to another if the previous bearer is killed. This includes memories, by the way. Due to the sheer attrition implied, there are very few "originals" left.
* LethalChef: Kongou and Hiei, after their second remodel, which exposes them as terrible cooks, with Hiei being the worst. How bad? Her curry makes the Admiral run around avoiding her for 2 hours. You're free to imagine what happened to the Admiral during that time.
** According to the drama CD that comes with the limited edition volume of "Side: Kongou", it is somehow established that neither Hiei nor Kongou's cooking is actually lethal (thus making it somehow averted) but rather a result of focusing too much on "unique flavors"[[note]]Japanese are known for their inability to eat spicy food, so serving South East Asian style curry is going to make them scream murder[[/note]]. As a result, the admiral ended up traumatized by it.
** With the introduction of Isokaze, we have yet another lethal chef, whose food makes the Admiral have a stomachache after breakfast and run away at the mention of lunch and dinner.
* LethalJokeItem: The kotatsu, played with in the official 4-koma. It makes nearly everyone useless (as in, they completely lose their will to sortie), even Yamato.
* LevelGrinding: At some point Admirals will have to resort to this, as certain stages require a minimum level to ''survive'' the normal nodes on it, nevermind the boss nodes that need to be cleared to unlock the stages that come after. And even then, due to the RNG-based mechanic it's not even a sure thing, [[LuckBasedMission since it's equally possible for a fleet averaging in the 90s to get stuck at a node as it is a fleet of levels 30s to squeak past it.]]
** [[MemeticMutation Levels don't matter!]]
* LevelScaling: In effect for the seasonal event maps from the December 2013 Arpeggio Collaboration event onward, as well as so-called "Special Operations" maps. Lower-leveled Admirals [[LowLevelAdvantage faced equivalently low-level mobs]], but at specific level "checkpoints" elite, then flagship-class ships start to appear. Going beyond a certain level threshold often meant the difference between a map simply being challenging, to mind-blowingly difficult, as evidenced during the Arpeggio event (where low-leveled admirals didn't even encounter named Fog ships) and the Spring 2014 event (where going past admiral level 80 spawned a '''Battleship Princess''', on top of the ''already'' difficult-to-defeat boss present).
* LoadsAndLoadsOfCharacters: An ever-growing number, especially since events or special updates add at least one new ship to the line-up, and this isn't including the admiral's support and maintenance staff, or the so-called "generic" enemies which compose the Abyssal Fleet.
* LuckBasedMission: Many, ''many'' stages, if it wasn't obvious enough already.
* MagikarpPower: Many ships' more powerful remodels only come after ''significant'' level grinding. If the ships are particularly weak prior to their final form (most notably the Chitose class seaplane tenders, whose final forms are some of the best light aircraft carriers in the game), this trope is played straight.
* MarionetteMaster: After their upgrade to Light Carriers, the Chitose-class become this, controlling their planes by DualWielding control bars.
* {{Meganekko}}: Musashi(!), Mochizuki, Kirishima, Makigumo, Choukai and I-8.
* MemeticOutfit: Shimakaze's infamous "thong-fuku". Helped by the fact that she's the only ship of her class, and as such the only girl wearing the outfit.
* MightyGlacier: Battleships with a listed speed of Slow (Nagato/Fusou/Ise/Yamato classes) are this. They can take a lot of punishment and give it back tenfold but are very slow. On the other hand, battleships with a listed speed of Fast (Kongou-class and Bismarck) are [[LightningBruiser a different trope.]]
* {{Miko}}: All Kongou- and Fusou-class battleships have this for their unifying theme (though only aesthetically), with the Kongou-class combining it with DetachedSleeves and ThighHighBoots.
* MildlyMilitary: Considering the sort of things the ships say to the admiral, and (according to the same quotes) the sort of things the admiral is implied to be doing, it seems this trope is in full effect. The official RPG goes a step further by never mentioning any links between the player's organization and the Japanese government or military.
* MoeAnthropomorphism: As mentioned in the description above, all the controllable ''kanmusu''.
* {{Mooks}}: The game's primary objective is that you sort your team of 6 to fight demon ships, known as the "Abyssal Fleet" (深海棲艦, ''Shinkai Seikan''). Similar to your compositions, they also have different types of mooks to go against you. But beware, these mooks aren't simple to defeat, thanks to the game's unpredictable, automated system. You may even come across EliteMooks, {{Airborne Mook}}s, {{Aquatic Mook}}s, and many more as you progress.
* MyGreatestSecondChance: As each event is based on an actual historical WorldWar2 campaign, some of which the IJN ''lost'' (Guadalcanal, Midway), they're seen as this for a player's fleet girls.
* NoCommunitiesWereHarmed: Played straight during the first few months of the game's life, the developers went to great lengths to obfuscate the fact that its normal and event maps were based on major World War 2 Pacific campaigns (specifically the ones the Imperial Japanese Navy ''lost''), then averted utterly come the 1st-year anniversary, where the bosses were ''immediately'' identified with the [[http://en.wikipedia.org/wiki/American-British-Dutch-Australian_Command ABDA]]. Come the Summer 2014 or Operation AL-MI event, the devs aren't even bothering hiding the fact that the Abyssals are stand-ins for the US Navy, what with their carriers now equipped with Hellcats, Helldivers, and Avengers.
* NonEntityGeneral: The admiral/teitoku commanding the fleet of ''kanmusu'', basically acting as the player's self-insert. This obviously results in (male) admirals having wildly different portrayals in fanwork, though it also makes a large segment of Pixiv artists simply replace the admiral's face with a 'T' (sometimes known as "[[WorldOfPun T-toku]]"), much like how the Producer in Manga/PetitIdolmaster has a 'P' for a head. (Most) female admirals somehow avoid the T-head, but still end up looking [[Manga/KuroganePukapukaTai suspiciously]] [[LightNovel/MariaSamaGaMiteru familiar]] anyway...
** EveryoneCallsHimBarkeep: Either Admiral (提督, ''teitoku'') or Commander (司令(官), ''shirei(kan)'').
** The admiral in '''Bonds of the Wings of Cranes''' plays with this, as barring the fact that he's a blatant pervert, Zuikaku had trouble not only placing his ''ethnicity'', but ''any'' distinguishing features (like scars and whatnot), which meant that if he ''wasn't'' such a perv, it would be easy to miss him in a crowd.
* NonHumanSidekick: Rensouhou-chan, a trio of [[Manga/{{Yotsubato}} Danbo-like]] turrets that tag along with Shimakaze. Also Rensouhou-kun, Amatsukaze's turret[[note]]since in real life Amatsukaze was Shimakaze's predecessor.[[/note]].
* NonstandardCharacterDesign: Due to using different artists, some of the girls may look sharply different from one class to another, and even within classes. For example, compare Yukikaze's design with the design of the other Kagerou-class ship girls or compare Murakumo's design with the design of the rest of the Fubuki-class ''and'' the design of the first two of the Hatsuharu-class.
* NoPlotNoProblem: Either this, or the game has a very ''very'' flimsy ExcusePlot if one squints hard enough. Proponents of the latter point to how the missions range further and further afield, starting with clearing out the waters around the naval district, before culminating in a raid at the Abyssal Fleet anchorage, complete with supporting bombardment by another squad of allied ships from your fleet.
* NoSell: For the {{Crossover}} event with Manga/ArpeggioOfBlueSteel in Christmas 2013, weapons used by ship girls were stated to have no effects on the Fleet of Fog because of their [[BeehiveBarrier Klein Field]]. However, they were modified by Arpeggio!Hyuuga to be able to avert it (mostly)[[note]]Mechanically speaking, the Klein Field is actually just a fancy miss animation that Fog ships have[[/note]].
* {{Ojou}}: Definitely Kumano. Speaks like one, acts like one as well.
* UsefulNotes/{{Onmyodo}}: Light Aircraft Carriers Hiyou, Jun'you and Ryuujou use shikigami paper planes. Their flight decks are represented as a scroll with an image of their flight deck printed on it.
* {{Otaku}}: Sazanami talks like she frequents [[{{Imageboards}} 2chan]]. One of Yuubari's [[IdleAnimation idle dialogues]] also insists [[SuspiciouslySpecificDenial she is not interested in watching]] [[OtakuOClock midnight anime]].
* OutOfFocus: Poor Fubuki, being the poster girl of her own game, only to get overshadowed by more popular characters like Shimakaze, Kongou or even Inazuma/Ikazuchi. Alleviated a bit in the 4-koma, where she and Shirayuki are the viewpoint characters.
** In one of the official manga anthologies, there's a story where Fubuki gets replaced as the poster girl - by Shimakaze, of course. She [[HotterAndSexier goes to great lengths]] to win back her spot, but it doesn't exactly turn out as intended...
[[/folder]]

[[folder:Tropes P-T]]
* PastLifeMemories: Plays an important part in the '''Bonds of the Wings of Cranes''' light novel, as the fleet girls initially struggle with their memories ''as ships'' and try to integrate these with their current existence as girls and young women.
* PeninsulaOfPowerLeveling: Although World 3-2 has a reputation for being ThatOneLevel due to the requirements needed to even get to the boss node, it's ''also'' known as a prime leveling spot to level up ships, due to the same composition restrictions.
* PlayEveryDay: Being a browser game Kancolle plays this quite straight, mostly by way of the daily quests, which are generally the most viable way to get certain resources.
* PowerEqualsRarity: Both played straight and subverted. Nagato class, Yamato class, Shimakaze and Yukikaze are particularly strong and rare ships in their respective ship types. However, many of the rarer ships don't live up to their rarity. For example, Kaga, despite being a gold-rarity ship, has higher damage output than other rainbow-rarity Standard Carriers due to her huge carrying capacity of the third equipment slot. RareRandomDrop Destroyers (those who are uncraftable and only obtainable from boss nodes) are not much different from {{Com Mon|s}} Destroyers aside from anti-submarine stats (which are better obtained from equipment anyway).
** Completely subverted for Light Cruisers. Kinu and Abukuma only gain advantage from the faster remodeling level and high anti-sub at lower levels, and their final stats are actually lower than their easily obtainable sisters of Nagara class. Agano class is the worst offender of this; not only are their stats not that flattering compared to Nagara class, but their fuel/ammo cost is also on par with some of the Heavy Cruisers.
* PowerUpLetdown: Battleships or standard carriers could be considered as one as their upgrades, while considered an overall improvement since it raises their stats, experience letdown on other important aspects, most significantly increased fuel and ammo consumption for sorties and repairs. This is generally exacerbated during limited-time events, particularly those in which the boss health meter regenerates over time, forcing players to repair their high-powered fleets more frequently than usual.
** Some ships suffer a decrease in luck after their remodel.
* RandomNumberGod: Oh god RNG really is '''everything''' in this game. Even if you manage to find some construction or development recipes that lead you to what you want, be very careful not to get too worked up. You will regret it.
** RandomDrop: It's been theorised that when you get the first of a ship, you become more likely to get her wherever it's possible to get her (be it from construction or from sorties). This would explain why the "Last Sister Syndrome" (you have every ship of a certain class... except one, which you just can't get) is so prevalent: getting every other sister ship increases the chances of getting them instead of the ship you want.
* RedEyesTakeWarning: Elite Abyssals get this, to accompany their angry red aura, as well as the fact that they're significantly harder to take down than their non-elite versions. On the playable side, there's Yuudachi, whose green irises turn a bright red once she's given her second remodel (which turns her into one of the more powerful Destroyers around).
* RedOniBlueOni: Several pairings, platonic or not, are of this kind.
** Akagi (Red Oni) and Kaga (Blue Oni). Akagi is Emotional and somewhat prideful. The latter is TheSpock.
** Kitakami (Blue Oni) and Ooi (Red Oni). Kitakami has great pride in her abilities but she is ultimately laidback and rather goofy, Ooi is fiercely protective of Kitakami and appears to have more fun in battle.
** Shigure (Blue Oni) and Yuudachi (Red Oni). Shigure is quiet and reserved, having also been tempered by the battles she survived; Yuudachi is cheerful and energetic, being a little power-plant who can out-fight cruisers.
** Musashi (Red Oni) and Yamato (Blue Oni). Musashi is a Hot-Blooded Determinator who lives for the battle. Yamato, being better known for her livability, is gentle yet extremely powerful.
** Nagato (Red Oni) and Mutsu (Blue Oni). Nagato is a dignified ship and a natural leader... if she remembers to be dignified; Mutsu is demure yet fearful of her own safety, lest she blows up and becomes torn in half.
* SailorFuku: Not surprising, given this is a game about anthropomorphized ''ships'', that variations of these show up worn by the girls, most obviously among the various destroyers.
* {{Sarashi}}: The Kongou-class sisters and Musashi wear it. Musashi wears ''only'' a sarashi to cover her her chest, while the Kongou sisters wear theirs under their shirts.
* SchoolSwimsuit: I-58, I-168 and I-401 wear school swimsuits covered by the upper half of their school uniforms as their unifying theme. I-19 and I-8 both wear ''only'' the swimsuit.
* ScratchDamage: If a low enough amount of damage is dealt to a target, it becomes this, which ends up ranging from 1 to a maximum of around 10% to 12.5% of the current HitPoints of the target. If an even lower amount of damage is dealt, it may or may not be treated as a miss (the combat mechanics have not been fully deduced).
* SheIsAllGrownUp: Some of the second remodels, such as Isuzu Kai 2 and Yuudachi Kai 2 (and to a lesser extent, Verniy). Compare them to their base forms, and the difference is staggering.
* ShellShockedVeteran: All over the place in '''Kagerou, Setting Sail!''', an expected consequence when the memories ''up to the point of death'' of the previous bearer of a ship "role" gets passed on to her successor. A good chunk of a prospective successor's training focuses on suppressing these memories, as well as the panic they cause.
* ShoutOut:
** The 1 million user special decoration is a poster for a [[Film/TheBattleshipPotemkin silent film]] about a mutiny of a battleship from a faraway country, which happens to [[http://livedoor.blogimg.jp/tamenuko/imgs/4/c/4ce5a04d.png look suspiciously familiar]].
** Arare's name happens to be pronounced the same way as Arale Norimaki from ''Manga/DrSlump'', and as such her VerbalTic is "n'cha", which is a common CatchPhrase in the series.
** Yuudachi Kai 2's [[Anime/MobileSuitGundam0083StardustMemory nickname]]. See RedEyesTakeWarning for details.
** Naka is one to both Music/AKB48 and VideoGame/TheIdolmaster (in fact, many of her lines are references to Atsuko Maeda). Her number in the ship library, as well as her second remodel level and Hit Point count, are all 48. She also gets into a Santa costume for Christmas.
---> '''Naka''': Naka-chan wishes you a Merry Christmas! He-he!
** One of Yamashiro's lines can be said to be this to [[LightNovel/ACertainMagicalIndex Touma Kamijou]].
---> '''Yamashiro''': Such misfortune...[[labelnote:*]]in Japanese, Touma's line is "fukou da"; Yamashiro adds a "wa" at the end, making it "fukou dawa".[[/labelnote]]
** I-401's sinking line:
---> '''I-401''': I wonder if I ran wild enough this time round. [[VisualNovel/FateStayNight A ship really sinks when they're sunk]], huh. Bye bye.
** The blazing-blue left eye of a few remodeled Abyssal Fleet flagships looks [[Franchise/BlackRockShooter very familiar.]]
* SingleIssuePsychology: Inevitable for some of the ship girls that are famous for events of their real life counterpart (usually sinking). As an average ship girl only has around 30 lines of dialogue to work with (which can get repetitive ''very'' quickly, especially for the battle-related ones), {{flanderization}} is inevitable either way. Some averted it by either not having a major focus on such events, or having additional lines boosting the number to ~60.
* StarterEquipment: In this case, a rookie admiral starts out with a choice from a selection of five destroyers -- Fubuki, Inazuma, Murakumo, Samidare, and Sazanami.
* StopPokingMe: Some of the ship-girls have a line about getting touched that they repeat after clicking them several times.
-->'''Kiso''': "Now ya talkin', [[http://en.wikipedia.org/wiki/Physical_intimacy#Skinship skinship's]] [[InvertedTrope also important.]]"
** Taken to it's logical conclusion in the 4koma.
-->'''Hyuuga''': (explaining to destroyers) ''I haven't done much work as his secretary, but...''\\
'''Kongou''': (flashbacks) ''I don't really mind the touching, but I'd like for him to know the proper time and place!''\\
'''Kirishima''': ''He just wouldn't stop with the poking.''\\
'''Kako''': ''Wish he wouldn't pull at my skirt.''\\
'''Nachi''': ''[[TheLastOfTheseIsNotLikeTheOthers That wasn't some sort of tactical maneuver!?]]''\\
'''Hyuuga''': ''...is what I've heard.''\\
([[CrowningMomentOfFunny cue]] MassOhCrap [[CrowningMomentOfFunny by the destroyers]])
* SugarAndIcePersonality: Kaga is normally this, even to you. The only exception to this is her interaction with Akagi, be it in doujins or even in the official 4-koma manga. However she is not that stoic as she does offer her ears for you if you need to talk to her about something, be it for official or personal matters.
* SuperDrowningSkills: The ship girls can WalkOnWater (with the exception of the submarines, who have SuperNotDrowningSkills instead), but they (including the submarines) sink like a stone once they go to 0 HP, even though all the damage they take appears only as ClothingDamage.
* SuperMovePortraitAttack: An interesting example. Called a "Cut-In" by players, this night battle (and later also applicable in day battles under certain circumstances) attack which procs with a chance based on several factors (the most well-known being the LuckStat), and does damage based on the type(s) of weapons equipped, zooms in on the ''equipment'' used in said attack, instead showing the sprite of the character using them at the same size as with other attacks.
* TakingTheBullet: Used as a gameplay mechanic - depending on the formation, ships may occasionally do this to protect their side's flagship.
* TheDevTeamThinksOfEverything: Usually averted; many things (such as [[GameBreaker submarines]] being nerfed) can take months to patch. However, this is also sometimes played straight. The fourth event boss of Fall 2013, Airfield Princess (飛行場姫, Hikoujyo Hime), is known by many Western fans as Henderson Field personified as a scary looking female. Some thought that as a building, the battle itself can't be T-crossed (basically a battle situation that is extremely unfavorable to your side as well as the enemy). But you have to remember, as Henderson Field is now an opposing unit in this game, that technically means she is a ''character'', hence even if she is a piece of South Pacific real estate [[OhCrap she can T-cross you]]. You would have to give credit to the developers who thought of this though.
** 5-4, Tokyo Express. Players have developed a habit of refreshing when they reach an undesirable node (such as when they get diverted away from the boss node). The developers took this into account, and as a result, the only end node in this map (that isn't the boss node) has no encounter. Later maps also added this in, although there were sometimes exceptions (such as one part of 2-5).
** In addition, 5-4 (which had a fuel node that gave fuel depending on the number of fuel drums your fleet had) was added as part of the Spring event preparations, along with expeditions which give a lot of fuel and ammo. Given that the speculated Battle of Midway was mainly fought in the day, support fleets (which consume a lot of fuel and ammo, and are useful only in nodes with day battles) would likely be very useful here. It was as if they anticipated the large amount of fuel and ammo that would be consumed at the event.
** In the final extra stage of the Spring Event E-5, a map that was basically a BossRush with a brutal line-up of bosses from previous events and stages (including the FinalBoss of the Fall '13 Event, one of the deadliest enemies in the game) in each consecutive battle node, before meeting up with the ultimate event boss ''escorted by the aforementioned FinalBoss'', bringing even 1 submarine in your fleet will result in a [[NoSell dead end]] (Bringing 3 or more will send you straight into a dead end before you even get to start the first battle).
* TheRival: A lot. Just to note some examples (be it in fan depictions or official):
** Fusou and Yamashiro towards Ise and Hyuuga. This is due to the fact that the real life Ise and Hyuuga were created as an improvement on the design flaws of Fusou and Yamashiro.
** Kirishima towards Haruna. This time it's due to the production rivalry/competition between Kawasaki Shipyards in Kobe (which built Haruna) and Mitsubishi Shipyards in Nagasaki (which built Kirishima), with the ships in question being built around the same time. However, Kirishima's production got delayed '''for a day'''[[note]]On the contrary, Haruna's engine was actually found faulty during her engine test. As a result the construction ended up taking an extra 6 days to complete, and the person who was responsible in the production of the engine committed suicide in order to apologize for his mistakes.[[/note]], which caused Kirishima to look at her as a rival, despite them being both completed on the same day, effectively making them twins. Do note that the whole rivalry is actually one sided as Haruna does not actually think much of it.
** Kaga towards Shoukaku and Zuikaku. Kaga belonged to the First Carrier Division, while Shoukaku and Zuikaku belonged to the Fifth Carrier Division. Since both divisions couldn't get along well during the war due to complications (mainly because of how they thought soldiers from the Fifth Division Carrier were amateurs), their rivalry began. Some lines in the game justify Kaga's uneasiness towards the Shoukaku sisters.
-->'''Kaga''': ''Don't put me on the same league as the Fifth Carrier Division."
* TheStoic: Kaga is one, but the prize goes to Shiranui, who is arguably more stoic than Kaga.
* ThirdPersonPerson: A few of the girls talk like that. Namely, Shiranui, Haruna and Kinu.
* TomboyAndGirlyGirl: Mogami and Mikuma.
* {{Tsundere}}: Murakumo.
* TurnsRed: Some boss nodes with gauges (usually for normal maps, but Summer 2014's E6 was a notorious example) become stronger when the gauge lowers enough to be emptied completely when you next sink the enemy flagship. After which it either becomes one of three possible forms (pre-final form, final form, and a third form) or it stays as the final form (for event maps).
[[/folder]]

[[folder: Tropes U-Z]]
* UnusualEuphemism: Not present in-game, but the fandom has several, for example:
** Displacement: While it depended on the artist, early on there was an obvious correlation between the maximum displacement of a ship and just how buxom its personification could be. So you had destroyers who were fairly flat-chested (due to being portrayed as kids), and super-battleships that were on [[Main/BuxomIsBetter the other side of the spectrum]]. However as time went on, the historical displacement of ships became less and less of a factor to their buxomness, to the point one had an ''incredibly'' flat Taihou (an armoured aircraft carrier), and yet also an extremely stacked Hamakaze (who as a destroyer is far lighter than Taihou).
** Fuel Tanks: Originating from one of Heavy Cruiser Atago's lines, where she complains about how her fuel tanks make her shoulders stiff... Except she doesn't have any visible fuel tanks, though what she ''does'' instead have is a bountiful bosom. Has become a catch-all word to describe the bustiness of Takao and Atago.
** Night Battle: What happens when Admirals and their favorite ship girls do ThisAndThat in {{doujinshi}}. With the implementation of the marriage system, well, what would you ''expect'' a married couple to do anyway?
* VerbalTic: Several of the girls have one. Kuma has "-kuma", Tama has "-nya", Arare has "[[Manga/DrSlump n'cha]]"...
** Somewhat [[EnforcedTrope enforced]], both in several fan depictions and (later) the 200k user special scroll, where Kiso, the only one in the Kuma-class to NOT have a verbal tic, was struggling to have one ("-kiso"!) herself.
** Yuudachi has "-ppoi?", which roughly means "it is like...?"
** I-19 loves to end her sentences with a "-no", usually "-nano".
** Uzuki ends her sentences with "pyon" for a [[AnimalMotifs good reason]], just like Kuma's "-kuma" or Tama's "-nya".
* WalkOnWater: For obvious reasons, this is a common ability of the ship girls. When it came to this, the official 4-koma compared it to ice skating.
** AscendedMeme: Originally, it was unsure ''how'' the ship girls even moved while on water. On Website/NicoNicoDouga, where Miku Miku Dance models became prevalent after the popularity of the game, videos popped up which showed the girls skating on water [[MindScrew as a possible way of emulating the propeller]] on an actual ship. So it is unsurprising that the 4-koma decided to go along with the idea as well.
* WaveMotionGun: The Kancolle girls were introduced to these care of the visitors from Arpeggio during the December 2013 event. Take note: all Fog ships barring Iona had these, and they could hit the ''entire'' squad.
* WomanOfAThousandVoices: Applied to incredible effect. Most of the game's voice actresses have more than five different roles (often voicing all the ships of a given class) and as such get the chance to showcase their versatility. Who would guess that Nagato, Shimakaze, and Jintsuu are voiced by the same person?
** Taken to its logical conclusion in the [[https://soundcloud.com/masapusan/one-nao-show Drama CD]] for the limited edition volume of the Side: Kongou manga, where Creator/NaoTouyama performs a 20 minute skit alone with 8 of her characters.
* YamatoNadeshiko: Houshou and Haruna. The former for her gentle tone of voice, and her lines evoking the feel of a traditionally-trained housewife, the latter for her politeness and general "good girl" air she projects. Surprisingly ''not'' Yamato herself, who can be better described as a normal girl suddenly thrust into a major responsibility.
* YouGottaHaveBlueHair: While most of the girls have reasonable hair colors, a good amount (including entire classes) thrive on the technicolor hue of their hair.
* [[YouRequireMoreVespeneGas You Require More Bauxite]]: While the game generates the resources on its own, it is common for Admirals to get into low reserves and the game complaining you do not have enough of them. One specific MemeticMutation even has its roots in this problem: Akagi can be acquired fairly early in the game with only a few quests, but the problem is that, as an aircraft carrier, she uses up bauxite, sometimes hundreds in one sortie, and repair buckets. Having neither usually results in having a two+ hour repair time and/or not being able to perform more sorties. Hence the reason images like [[http://www.pixiv.net/member_illust.php?mode=medium&illust_id=41731720 this]] are really popular, because of the level of maintenence required to handle it.
-->''...It feels like some numerical counter somewhere is dropping like a rock!''
* ZettaiRyouiki: Shimakaze is one of the more obvious examples, but other girls (like [[ThighHighBoots Kongou and her sisters]]) also sport this.
[[/folder]]