 Cooking may be limited to warming food on an exhaust vent, and buckets may be used for bathing, laundry, and sanitary waste.Habitability standards vary among navies, but client warships large enough to include a head, bunks, a shower, a kitchen stove, refrigerated food storage, a drinking water distillation unit, and a laundry require little more than medical and repair service from a depot ship.Depot ships are similar to repair ships, but provide a wider range of services to a smaller portion of the fleet.