Voyage of the Basset is a 1996 fantasy novella. It tells the story of Professor Algernon Aisling and his two daughters Miranda and Cassandra as they set off on the HMS Basset, a marvelous ship run by dwarves and gremlins, into the lands where magical creatures live.
This book contains examples of the following tropes:
Aerith and Bob: Played with. One of the trolls is named "Bob", but the author tells us that "Bob" is short "not for Robert, but for Bobalogwar."
All Myths Are True: the protagonists end up meeting the Minotaur, the Sphinx, harpies, a dryad, elves, Medusa, ogres, and a unicorn.
All Trolls Are Different: the ones the Basset encounters are human-sized, ugly creatures with a decidedly malicious bent.
Bigger on the Inside: the Basset. Miranda calls Sebastian on this, to which he answers, "As you said, Miss Miranda, it's all nonsense."
Cassandra Truth: Cassandra tries to tell her father that stealing the dragon skull from the trolls' lair is a bad idea, but he doesn't listen to her. It ends up bringing the trolls down on them at the end of the book.
Meaningful Name: Cassandra, who prophesies disaster without being believed.
Sirens Are Mermaids: the mermaids can sing with haunting beauty, although they use it to call the sea serpent so he can save ships from being dashed on the rocks. According to Professor Aisling's notes, they allege that sailors made up the whole "singing sailors to their deaths" bit.
Missing Mom: Mrs. Aisling died of an unknown illness sometime before the start of the book.
More Hero Than Thou: Professor Aisling and one of the dwarves have a discussion like this when they think a preventative may have been found for Medusa. Medusa cuts them short, saying that she'll test its efficacy on the birds if the crew will give her a moment alone on deck.
Must Let Them Get Away: Professor Aisling wants to pursue and kill the trolls at the end, but the dragon reminds him that they are part of the myths too.
Reluctant Monster: Medusa seems to have this vibe; although detached about the statues in her "garden" upon first sighting, she doesn't want to turn so much as a seagull into stone during her time on the Basset. That doesn't stop her from accidentally petrifying the first mate.
Stock Ness Monster: the mermaids' sea serpent evokes this, but unlike some presentations, he saves ships.
Taken for Granite: This happens to Sebastian halfway through the book when he tries to prevent Medusa from accidentally doing the same thing to Cassandra. This touches off the quest for a unicorn. Medusa also weaponizes it towards the troll a in the final battle.
Taking the Bullet / Tuck and Cover: After pushing Miranda and the unicorn out of the way of the dragon's flame, Professor Aisling covers them with his body. He isn't hurt, though; the dragon only gets Skotos, the troll chief.
Well-Intentioned Extremist: Professor Aisling becomes one of these midway through the book in his zeal to prove the importance of myths; he rationalizes taking the mythological creatures back with him and putting them on display in London. He gets better.
What Have I Done?: Professor Aisling when his change to a well-intentioned extremist inadvertently contributes to Sebastian's petrification.