Nutsy,

Leaving an unattended fire is a hell of a lot more unseaman like than
sailing with the hatches open!!

If it should happen on MY boat (Galley right across from the head annd
under the companion way) I would use the hand held shower and spray the
fire with water. BUT I would have switched to the inside Steering
Station, which my vessel has and I would have been in attendance.

Ole Thom