Despite the potential for the dreaded technobabble, the series, like much of the Star Trek Novel 'Verse, is focused on character and worldbuilding, so it isn't anywhere near as inaccessible as it might sound...
The paperback collections are as follows:
- 1. Have Tech, Will Travel — collects eBooks 1-4
- 2. Miracle Workers — collects eBooks 5-8
- 3. Some Assembly Required — collects eBooks 9-12
- 4. No Surrender — collects eBooks 13-16
- 5. Foundations — collects eBooks 17-19
- 6. Wildfire — collects eBooks 20-24
- 7. Breakdowns — collects eBooks 25-28
- 8. Aftermath — collects eBooks 29-36
- 9. Grand Designs — collects eBooks 37-42
- 10. Creative Couplings — collects eBooks 43-49
- 11. Wounds — collects eBooks 50-56
- 12. Out of the Cocoon — collects eBooks 57-60
- 13. What's Past — collects eBooks 61-66
The characters of this series also have cameos in other Star Trek works, such as the novel A Singular Destiny and (briefly) Star Trek: Articles of the Federation.
Several stories in this series are crossovers with the Star Trek: Deep Space Nine Relaunch. One of the What's Past prequel stories is also a part of the Star Trek: Vanguard arc.
Starfleet Corps of Engineers provides examples of the following tropes:
- Abnormal Ammo: The Nachri rebels in the story Aftermath have armed their ships not with the usual energy weapons or torpedoes, but with the equivalent of cannon balls.
- Acquired Situational Narcissism: Tev in Creative Couplings. Its Serial Escalation seeing how puffed-up and full of himself he is in the first place. To the horror of Fabian Stevens, he ends up even worse after getting a short taste of command. On reflection, having Tev serve as "captain" for the cadet's holographic "voyage" wasn't a good idea.
- Actual Pacifist: One of the races in Honor.
- Adventurer Archaeologist: Bart Faulwell's family were essentially this. So was Lense's mother.
- Adventure Towns: The da Vinci usually ends up at a different planet (or other notable location) in each successive story. The character arcs (of which there are plenty) take place over a backdrop of largely unrelated missions. They fix the Master Computer on Eerlik in one story, clear up the mess with the Starsearcher crash on Intar in the next, and get the Defiant out of interspace in the following. On to Empok Nor!
- After the End: The da Vinci has to pick up the pieces after a planetary disaster more than once.
- A.I. Is a Crapshoot: Learning Mech, particularly when it tries to bring fifteen asteroids to the surface of Keorga for study purposes, threatening an extinction-level event.“The rules of learning were manually overridden. Automatic safety feature no longer engaged. Discipline must be maintained. A lesson must be learned. Thank you for using Learning Mech.”
- Alien Arts Are Appreciated
- Sinnravian drad music, though not appreciated by all. A Running Gag consists of Carol Abramowitz (and Nog during the crossovers with the Star Trek: Deep Space Nine Relaunch) enjoying this particular brand of alien music. The other characters can't stand it. Abramowitz's roommate, P8 Blue, asks a superior officer for permission to feed Abramowitz to her larvae, in order to put a stop to it.
- Everyone holds planet Keorga in high regard for its arts. And building on the Sinnravian drad, Abramowitz has branched out into Nausicaan tusk opera.
- Alien Blood: Nalori have blue blood, like previously-established canonical species Andorians and Bolians.
- Alien Catnip: Strawberries are a mild narcotic to Mizarians.
- All of the Other Reindeer: The Nasats treat P8 Blue and other "Quiets" like this. P8 Blue was regularly dismissed by her fellows and viewed as freakish or deformed. In fact, her differently-wired brain is a trait that lets her play a vital role in establishing relations with another race living on the Nasat homeworld. Naturally, P8 saves the day.
- Alternate Universe: In Lost Time.
- Amazing Technicolor Population: The Nasat, who are red, blue, green, yellow or brown.
- Ambadassador: Lantar, though that's to be expected for a Klingon diplomat.
- Ancient Artifact: The "Zapper", clearly the same device as the Mirror Universe Tantalus Field, from Star Trek: The Original Series. Rod Portlyn unearths it in one of the later stories.
- …And That Little Girl Was Me: Implied in Captain Gold's Tales from the Captain's Table story, "An Easy Fast": The protagonist of the tale that he tells is named Abraham Silver, a pseudonym that humans familiar with Jewish lore would recognize, but the alien captains hearing the story would likely not.
- Angsty Surviving Twin: Em-Lin in The Cleanup. She's a Miradorn. Angsty Surviving Twin is practically their hat at times.
- "Ass" in Ambassador: Gabriel Marshall, a recurring character who plays the classic role of "pushy Federation diplomat", as established in Star Trek: The Original Series.
- Astral Projection: One story involves the planet Vrinda inventing a form of technology that allows this.
- Awesome, but Impractical: The Dancing Star, really. See Cool Ship, below.
- Bar Brawl: Mor glasch Tev, the Tellarite second officer, accidentally starts one on Rhaax, due to mistaking hostility for Tellarite-esque argumentative politeness. Under his people's Blue-and-Orange Morality, insults and blustering argument are a form of polite discourse. He misjudged in this case, though.
- Batman Can Breathe in Space: Nasats can survive for an hour or so in hard vacuum.
- Bilingual Bonus: An in-universe example with Tev’s paper describing the Kharzh’ullan Ring. There are Romulan swear words cunningly disguised among the Tellarite phrases he’s using.
- Binding Ancient Treaty: The Preservers agreed to protect the Koas, and indeed fulfilled their "ancient promise" to save the Koa homeworld.
- Bizarrchitecture: Due to the natives' love of symmetry, houses on Bundinal have faux front doors at the back - not a back door, but a door identical to the one in front, and looking equally important, even though it isn't.
- Blessed with Suck: Nasat Quiets, whose special cross-species communication abilities render them outcasts among their own kind. They can communicate with Plant Aliens the Citoac, but the unique brain activity allowing this renders them unable to communicate normally with other Nasats.
- Booby Trap: There were quite a few in the city of Stratos on Ardana. Also, Bart Faulwell's sister was killed by one when he was a teenager. It was in a tomb; the family were essentially Adventurer Archaeologists.
- Brain Food: The creators of the monster shii on Sarindar. A race which colonized the planet centuries ago, they fed on brain matter. The artificial constructs in the shape of shii beasts were built to collect the heads, decapitating victims in order to gather the brains.
- Break the Cutie: Corsi was a lot more easy-going and fun as a junior officer. But after she was forced to kill her insane lover (who had Christine Vale as a hostage), she became the stoic, very by-the-book "Core-Breach" Corsi that serves on the da Vinci.
- Breather Episode: The four stories following on from Wham Episode Wildfire. These are quieter tales focusing on various characters' off-duty activities as they come to terms with what's happened.
- Came Back Wrong: Possibly Lense's brother Jonathan.
- Cargo Cult: The tribe from The Light, with a downed Borg cube serving as the centre of their religion.
- Chased by Angry Natives: Several times.
- Complaining About Rescues They Don't Like: The beleaguered Da Vinci makes it in time to rescue a party of equally beleaguered miners only by cannibalizing the mining equipment they were delivering to the station. One of the miners whose life was literally saved moments before complains about this. Captain Gold shouts him down and forces him to apologize.
- Continuity Snarl: The fate of the Constitution-class Defiant as depicted in this series was different from what was later shown on Star Trek: Enterprise. Reconciling the accounts is not unworkable, but it is going to require a lot of thought. The writers of the installment featuring the Defiant are reportedly working on a suitable reconciliation idea that will tie it all together.
- Conveniently Close Planet: In Collective Hindsight, a runaway ship is on a collision course with a planet, despite how unlikely that would be in reality. The ship even passes through several star systems en route, apparently threading the needle several times.
- Cool Ship: Several, notably the Strata ringship (which is a giant spinning wheel in space), the Dancing Star (powered by actual flares of stellar matter and capable of diving into a sun), and the Minstrel's Whisper (an ancient vessel with, essentially, an improbability drive). Then there's the arc-ship on which the People are carried to their new home. They've been locked into a medieval culture in an internal artificial world they don't even realize is aboard a ship.
- Corrupt Corporate Executive: Rod Portlyn. How corrupt is he? He deliberately poisoned an entire colony world to induce crop failures, then came in to buy the increasingly useless land. He kept the farmers on as workers and thus earned their gratitude by "saving them" from bankruptcy. He turned another world in the same star system into a dumping ground for garbage, and he later tries to murder its population. All in the name of profit, obviously.
- Cosmopolitan Council: The Elysian Council in Where Time Stands Still.
- Creative Sterility: Played with in the case of Keorga. Its inhabitants seem to lack the capacity for imagination or innovation as humans understand it, yet channel much of their culture into creating beautiful displays of art, for which they’re renowned. The humans struggle to comprehend the contradiction.
- Damned by Faint Praise: Tev's "compliments" to the rest of the team. Sonya Gomez accuses him of acting as though the rest of them are simply holding him back. Tev denies this:Tev You're all exceptionally competent.
Sonya Gomez: Well, thank you so much for your stamp of approval. "Exceptionally competent." That ranks right up there with "superbly adequate" and "remarkably acceptable" in the backhanded compliment hall of fame. - The Dead Have Names: Near the end of the Wham Episode Wildfire, there's an extract from the Captain's Log that lists the 23 (out of a crew of 40) crewmembers who were killed in that mission. The most "important" character in the list, Second Officer Duffy is just tossed into the list with no significant importance.
- Defrosting Ice Queen: Corsi. Stevens does his damndest to get her to drop her shields and act like a person. It eventually works, and they end up married.
- Derelict Graveyard: The Sargasso Sector, named for the Sargasso Sea on Earth. It's a junkyard of abandoned ships floating around a collection of black holes and quasars. The da Vinci crew are assigned to clear a path through it to allow a convoy access — one of the series' more notable cases of Space Is an Ocean.
- Descriptively-Named Species: Would you believe that the Syclarians write their language in a circular fashion?
- Depopulation Bomb: The Miradorn nearly fell victim to one of these that would have killed all twinned Miradorn (that's 98% of them) had it not been stopped. It wasn't actually intended to be a depopulation bomb, though.
- Dr. Jerk: Lense is a rare female example.
- During the War: The "War Stories" installments, as well as a couple of the "What's Past" stories.
- Ear Worm: Discussed; Gomez uses an ear worm lyric from a Lurian folk song as part of her personal access code.
- Evil Cannot Comprehend Good: Overseer Biron, a recurring villain, doesn't understand the Federation or its Starfleet heroes, in particular their compassion. Why Starfleet officers and captains expend valuable resources helping "expendable" crewmen or those of lesser station is beyond his comprehension. Biron is a highly intelligent being, but a product of a brutal and calculating culture that assigns worth to people based only on how productive and useful they are.
- Exposed Extraterrestrials: The Nasat (who are Insectoid Aliens and thus protected by their exoskeletons).
- Failsafe Failure: A Federation space probe in one story (which is actually entitled Failsafe) suffers a Failsafe Failure, requiring the crew undergo a mission to retrieve it from a pre-warp planet. Sonya Gomez even seems to lampshade the improbability.
- Fantastic Arousal: Bynars and the smell of strawberries, apparently.
- Fantastic Caste System: The Androssi, who have a vertically stratified example. Worker caste Androssi can be killed on a whim by the Officer class. Recurring villain Overseer Biron is an Officer class Androssi, and indeed treats the lives of his subordinates very casually indeed.
- Fantastic Religious Weirdness / Interspecies Romance: Klingon-Jewish wedding FTW!
- Fantastic Slurs: "Singleton" is a terrible slur on Bynaus, signifying one who is unfit for bonding with another; a rejected person. To the Bynars, who (almost) always operate in pairs, this is the ultimate insult. Solomon is on the receiving end of such abuse due to his decision not to take another mate upon the death of his partner.
- Fictional Political Party: The two major parties of the Kropaslin government are named "Agreement" and "Consensus".
- Forgotten Phlebotinum: Often averted. In the story The Cleanup, a character resolves a problem using advanced technology picked up in a previous tale.
- Fur and Loathing: This doesn't come up, but possibly we'd expect it to. It is mentioned in an off-hand line in one story that Klingon characters are wearing al'Hmatti fur. Seeing as the al'Hmatti are a sapient subject species of the Klingon Empire, we can only hope it's harvested from those whose die naturally (which might well be bad enough)...
- Giant Spider: The Koas resemble very large spiders, only with a head like an octopus. Don't worry; they're friendly.
- A God Am I: The crazy Vorta in Fables of the Prime Directive.
- Guilt by Coincidence: Part of Lense's "issues" stem from the fact that Julian Bashir confessed to being genetically enhanced. Since Lense did better than Bashir in medical school (Bashir deliberately screwed up a question on the final), Starfleet assumed she must be genetically enhanced as well and threw her in the brig for a month.
- Gut Feeling: Discussed in one story as something P8 "Pattie" Blue has learnt to respect, due to influence from the other races she works with:Though she knew she'd be checking out other facilities, Pattie had a good feeling about this one. One thing she'd learned from softs was to trust intuition. More times than she cared to recall, one of her crewmates had said something along the lines of "I have a bad feeling about this," and the feeling had proved to be an accurate barometer of the situation. As she walked down the corridor, she fingered the pouch containing the datachip. Yes, I definitely have a good feeling about this.
- He Who Must Not Be Seen: Overseer Biron's sponsor.
- Human Outside, Alien Inside: The Ardanans, who were established in Star Trek: The Original Series as looking just like humans (as did many of the series' aliens). The SCE stories describe the Ardanan brain and demonstrate that its structure and chemistry is very different from that of humans.
- Humanity Is Infectious: Some of P8 Blue's belief systems are influenced by the humans she works with; she begins to find an interest in history, and even feels slightly maternal towards her larvae, being a little sad when she drops them off at the childcare centre, never to see them again.
- Hungry Jungle: The Nasat homeworld.
- Hurl It into the Sun: A solution to the Dancing Star problem, or so the characters initially thought. The Dancing Star is a very advanced ship, though, and was designed to survive in there. In fact, it dives into stars to refuel.
- I'm a Humanitarian: The crazy Vorta in Fables of the Prime Directive.
- In-Series Nickname: P8 Blue is known by the nickname "Pattie". In fact, most members of her race have a nickname - B6 Blue, for instance, is "Bishop" and Z4 Blue is "Ziff".
- Informed Judaism: Averted. Captain Gold and his family are Jewish (his wife is a rabbi, no less), and it’s most definitely not Informed Judaism. As a result, Jewish customs and traditions are frequently mentioned or observed.
- Insectoid Aliens: The Nasat, who resemble pillbugs. They therefore look like crustaceans, and are actually arachnid (eight limbs). Major character P8 Blue is a Nasat, and they're allies of humans, being part of the United Federation of Planets.
- Insufferable Genius: Mor glasch Tev
- Just Following Orders: "Grand Designs" involves Gomez being given orders from Captain Scott and Ambassador Marshall that include keeping Captain Gold in the dark about their true mission. Needless to say, Gold is furious when this decision to lock him out of the loop nearly causes an interstellar incident.
- Killed Off for Real: Kieran Duffy
- Lampshade Hanging: In "War Stories", Sonya Gomez, looking for every bit of extra power, curses the "fool of an engineer who designed the holodeck with an incompatible power system." This was a reference to the much maligned Hand Wave from Voyager to explain why the crew could use the holodeck under their desperate circumstances.
- Landfill Beyond the Stars: Rod Portlyn, the Corrupt Corporate Executive, turns the planet Phantas 61 into this.
- Luck-Based Mission: The Minstrel's Whisper, being a ship powered by what is more or less an improbability drive, essentially turns any mission into this. Beware the peanut butter... it can be quite unlucky at times. Tev later turns this to his advantage, though; he uses technology from the Minstrel's Whisper to help bring a crisis on New Mirada under control.
- Nasat-Eating Plant: The Citoac are a sapient variety... though they only eat their Nasat neighbours when they can't get their usual nourishment through photosynthetic means.
- Martial Pacifist: Rennan Konya, the Betazoid security guard.
- Meaningful Name: The planet Eerlik and its Pevvni minority. Eerlik is a Terminally Dependent Society controlled by computer; several episodes of Star Trek: The Original Series had similar plots, and the writer and director of one of these, The Apple, were named Max Ehrlic and Joseph Pevney respectively.
- Medieval Stasis: Deliberately induced in the culture known only as the People, so as to disguise the fact that their world is merely a giant colony ship slowly transporting them to a new star system.
- Mr. Vice Guy: Tev is one of the most prideful heroes around. Of course, he's a Tellarite, so to his culture it isn't actually a vice.
- My Species Doth Protest Too Much: Two of the alien characters.
- The first is P8 Blue, who likes to "shake things up" and have adventures, in contrast to the rest of the Nasats, who are super-cautious, conservative, and hate taking risks.
- There's also Soloman the Bynar (formally known as 110), who received his name after his mate died, and he refused to return home and take a new partner as expected.
- But the trope is averted with the third alien character, Tev, who is very much the stereotypical Tellarite. This is noted by a human character, who in fact thinks Tev is the most stereotypical Tellarite he's ever encountered.
- Named After Their Planet: Sometimes played straight (Resaurians from Resaurus, Rhaaxans from Rhaax), sometimes averted. Most notably, the Shmoam-ag aren’t from “Shmoam” or “Shmoamia” but from “Earth”. Apparently, it isn’t the first time the translator has done that — many cultures call their planet of origin “earth”, “dirt” or “ground”.
- Names to Run Away from Really Fast: Security chief Lt. Commander/Commander Domenica Corsi is nicknamed Core-Breach for her temper. We don't see if often, but that's mainly because the crew are extremely careful about setting her off.
- Naming Your Colony World
- The Tellarites don't seem to follow any of the "rules"; then again, we don't know what the names of their colonies, e.g. Maeglin and Kharzh'ulla, mean in Tellarite.
- The Rhaaxans don't seem to follow the rules, either.
- On the other hand, the Andorians seem to have named a colony after a figure from Earth mythology... unless the word means something different in Andorii.
- Humans are very fond of the "New Wherever" variant.
- Never Accepted in His Hometown: P8 Blue, who is a perfect ambassador for the Nasat people (friendly, intelligent, kind, brave, humorous) is actually an outcast on the Nasat homeworld.
- Noodle Incident: The Tellarite Story (though we do get a reasonable number of details, much remains nebulous).
- Non-Malicious Monster: The monster shii in Invincible are simply following their programming.
- Not Quite Dead: The Strata, silicon-based aliens in the story Spin. They are successfully "rebooted" by the da Vinci crew.
- Oh, My Gods!
- Ho'nig, among others.
- The Koas worship the Architect of Time.
- One-Steve Limit: Subverted with Winn Mara, a minor supporting character and a Bajoran. She shares one of her names with Kai Winn Adami from Star Trek: Deep Space Nine, but there's no evidence they're related.
Word of God has more or less confirmed the name "Winn" was chosen to deliberately subvert the One-Steve Limit rule. - Parent ex Machina: The creatures in the story set on Risa.
- Penal Colony: The Resaurians in the two-part story The Demon have a penal colony inside a black hole, of all places.
- Pig Man: The Tellarites, of course. Fabian Stevens insists he finds racist jokes about the Tellarite-pig resemblance tasteless, yet he seems to have an awfully large collection of them stored away in his mind. He would never accuse Tellarite team-member Tev of "hogging the glory", oh no...
- Place Beyond Time: The Delta Triangle.
- Planet of Copyhats: The character M3 Green, from Star Trek: The Animated Series, was an overly cautious coward. His race features in the Corps of Engineers (having been named the Nasat), and their hat is indeed "being overly cautious". However, the lead Nasat character, P8 Blue, is a straight-forward case of My Species Doth Protest Too Much, as she loves shaking things up and taking risks.
- Plant Aliens: The Citoac. They share a planet with Insectoid Aliens the Nasat.
- POW Camp: In Failsafe; some of the crew spend a short time in one while undercover on a pre-warp planet.
- Precursors: The Preservers.
- Prequel: The What's Past mini-series, which is also a case of A Day in the Limelight for several characters, including a couple of less prominent ones.
- Pride: Tev points out that Tellarites value this trait most highly.
- The Quest: Among the race known only as the People, young males frequently undertake a quest as a coming-of-age ritual.
- Reptiles Are Abhorrent: Captain Gold has this instinctive reaction, but he tries not to let it affect him in dealings with snake-aliens the Resaurians (who are on the whole reasonably friendly).
- Revenge by Proxy: Rod Portlyn
- The Revolution Will Not Be Vilified: Usually averted. Rebel movements are often very ambiguous and/or complex. The Silgov, though clearly victimized, are presented as questionable in some regards themselves, willing to victimize Koa in turn in order to get what they want. Likewise, the X'Mari Resistance are sympathetic, but clearly no saints. The Nachri rebels are questionable in conduct, too, although their grievances may well be legitimate.
- Ridiculous Future Sequelisation: We're not too far from it already, but two stories make mention of Rocky VIII: The Clone Factor!
- The Rival: Eevraith to Tev.
- Rule of Cool: Frequent with some of the more fanciful alien ships or technologies.
- Runaway Train: The Dancing Star. Lampshaded as such.
- Running Gag
- Abramowitz' love (and everyone else's hatred) of Sinnravian drad music.
- Vance Hawkins is always the one who gets roughed up, shot or otherwise harmed. This despite Rennan Konya pointing out he has particularly low pain tolerance.
- Sacrificial Lamb: 111.
- Servant Race
- The Bynars were originally this to a race of now-departed AIs, though they now have their own civilization.
- The unnamed race who once colonized Sarindar created artificial creatures to gather food for them; two of these remained intact up until 2376 and took the form of crystal creatures known as shii, contributing to the legend of the monster shii.
- Shout-Out: The story Out of the Cocoon features a colony of clones. One of the clone family lines is named DiCamino, suggesting the cloning planet Kamino from Star Wars. Another line is named Hammond, after the fictional creator of Jurassic Park.
- The series as a whole has more than a few to M*A*S*H. Captain Gold is directly based on Colonel Potter, and in several stories it really shows. The basic concept for Tev, meanwhile, was "Charles Emerson Winchester the Tellarite."
- "Shut Up!" Gunshot: Gold, trapped between his wife, granddaughter, Klingon ambassador and ambassador's son, all arguing over a wedding, calmly fires a phaser into the ceiling.
- Silicon-Based Life: The Strata. Also the entire biosphere of Sarindar.
- Skewed Priorities: Played with in Age of Unreason; a character trying to violate his world's laws and contact the Federation for help is chased down, and the police plead with him to surrender so they don't have to shoot — which might damage the building he's in. The character actually feels pride and hope that they consider the building's health more important than his, reflecting that "perhaps there's hope for my people after all".
- Snake People: The Resaurians. Unusually, most of them are friendly.
- Space Battle: A couple.
- Space Mines: The Gorn Hegemony makes use of these, and fields specialized mine-launcher ships. One such vessel causes trouble for the Corps of Engineers in the story “Where Time Stands Still”.
- Spinoff Sendoff: Captain Picard and the crew of Enterprise feature heavily in the first novella; Geordi La Forge hangs around for a few stories more, until the new characters are established enough to carry the series.
- Starfish Language: The Citoac communicate by using sounds of a pitch that stimulates the brain of another being, directly influencing their neurology.
- Stay in the Kitchen: The Nalori have a similar ideology, and resent having a female performing administrative work at their facility on Sarindar.
- Stop Being Stereotypical: P8 Blue to many of her fellow Nasats; she hangs a lampshade on it in a discussion with a non-Nasat friend.
- Supreme Chef: Rabbi Rachel Gilman
- Survivor's Guilt: Domenica Corsi experiences this after the Galvan VI incident, in which many of the crew died while she, the security chief, was unconscious and helpless.
- Lense has some from the Dominion War, which leads to Gold hauling her in for informal therapy since the da Vinci does not have a counselor aboard.
- Terminally Dependent Society: Eerlik, which is run by Master Computer, and nearly falls apart when it breaks.
- Terraform: A two-part installment features the da Vinci called to Venus, to participate in the terraforming project there. The Bynars are providing the humans with assistance.
- Time Travel for Fun and Profit: One story involves a Ferengi finding a time machine and using it to manipulate the stock market in his favour. He becomes a success story "overnight", but his meddling is soon dealt with by the Corps of Engineers, who stumble across his base. After a short chase through planet Ferenginar's recent past, he's apprehended and his time machine destroyed.
- To Be Lawful or Good: Scotty and Admiral Ross have a lengthy conversation about this in the story The Future Begins, following Scotty's temporary retirement (having lost faith in Starfleet after being roped into one of Admiral Nechayev's more underhanded operations). The exchange involves Ross revealing the incident that led to his awareness of Section 31 (as revealed in Star Trek: Deep Space Nine).
- Trademark Favorite Food: Tev does like his apple ranchers.
- Tree Top Town: The Nasat homeworld. The Nasat civilization originated on the forest floor, but now resides in the trees.
- Turned Against Their Masters: The Bynars reverse the usual situation; they're a race of organic beings bio-engineered by machine intelligences, and who later rebelled against their robotic masters.
- Twin Telepathy: The Miradorn. An important plot point during the story set on their homeworld (The Cleanup). And, see Angsty Surviving Twin.
- Typhoid Mary: Dobrah
- Unwanted False Faith: The Nalori go from resenting Sonya Gomez to near-worship of her after she kills a monster shii. They call her the sanuul, the "Curse-lifter".
- Villain with Good Publicity: Rod Portlyn
- War Is Hell: "Failsafe", and the brutal war on Teneb.
- Weapon of Mass Destruction: Several times. The Rhaaxan homeworld and its colonies were both secretly developing them, for potential use against the other. In the Wham Episode Wildfire, it was feared the title Wildfire device could be used for this purpose, though it wasn't intended as a weapon. Finally, recurring villain Overseer Biron and his crew were attempting to reconfigure the abandoned Empok Nor station into a superweapon. The da Vinci crew team up with characters from the Star Trek: Deep Space Nine Relaunch to stop them.
- We Do the Impossible: Basically the Corps of Engineers in a nutshell.
- Weirdness Magnet: The da Vinci, as lampshaded in unusually specific terms by Fabian Stevens following their second crazy Vorta adventure in as many weeks.
- Wham Episode: Wildfire, in which a major character is killed off, along with several supporting characters, and the ship is crippled and nearly destroyed. For the entirety of the rest of the series, the events of Wildfire will be haunting the surviving characters.
- What a Piece of Junk: The Lovell. It's an old Daedalus-class starship that had been decommissioned for half a century before the Starfleet Corps of Engineers claimed it for their own. It has mismatched hull plates, welds and patches all over, and rattles like it's about to explode when it first accelerates to warp speed. But because it's a ship full of engineers who have nothing better to do than tinker, repair, or rebuild things it can keep up with (or outrun) any ship in the fleet.
- Whole Episode Flashback: 10 Is Better Than 01. Most of the other "What's Past" stories, too, though they usually have a prologue and epilogue set in the "present".
- You Are the Translated Foreign Word: Sonya Gomez is Sanuul!
- You Can't Go Home Again: Tev in Ring Around the Sky.
- You Didn't Ask: This is the Keorgans' response when Carol Abramowitz and Bart Faulwell demand to know why the danger facing the Keorgan capital wasn't explained in the report they were sent before arriving.
- You Have Failed Me: Averted with Overseer Biron's Sponsor, who is quite understanding on those occasions where Biron fails in his task. Biron himself, on the other hand, is happy to kill crewmen who disappoint him, as is his right as an Officer class Androssi.
