Between the precise staff strike and the Dragonborn going ape-<censor beep>, the monster looks like someone dropped something in a sushi kitchen and stepped on it.
Ratgirls gets a bunch of garbled team speak in nautical jargon relating to parts of the main deck, and a flash of the party as seen from behind the oatbag. The panicked crew seem to be reporting between 5 monsters on the main deck and twenty-something "they're everywhere".
place holder map. Note the stairs going up to the main deck.