Equipment for fantasy fighter craft

[Dalillama]

I'm starting a Spelljammer game (adapted to GURPS). The PCs have absconded with a Doombat in what is either an act of desertion by its commander or an act of piracy by a cashiered ex-officer. This is a vessel that launches and lands from a larger vessel, has a crew of five, and acts tactically as something between a fighter plane and a torpedo boat, or as a long-distance armed scout. The navy operates in a broadly similar fashion to that of Nelson, with a dash of Leary's and Harrington's.

What type of equipment is likely to be stored aboard and thus available to the PCs?
On my list so far:
Heavyweight clothes for the crew, in case of deployment somewhere colder than usual
Personal fliers (Gadabouts) for the crew, in case it's necessary to abandon ship
A week or so worth of food, for scouting missions
Medical supplies (probably including some magical ones, not sure what/how many)
Arrows
Other spare weapons, maybe?
Am I missing anything obvious?