(2) On the main deck, the rest of the enlisted men and the Navy gun crew are quartered. Also on this deck are the ship’s galley and pantry, mess rooms (fig. 20), shower rooms, and diving-gear compartment. (3) On the boat deck are officers’ quarters, the ship’s company office, dispensary (fig. 21) and a four-bed hospital. [Illustration: _Figure 15. View of two of the ship’s lifeboats swung on two different types of davits. The davit A in the foreground is the quadrantal davit and is rapidly replacing the round bar or radial davit B, because fewer men are required to work it._] (4) On the bridge deck are the staterooms and offices of the ship’s master, salvage officer, chief engineer, and the naval gunnery officer. =k. Refrigerators.= Located on the second platform deck are the fruit and vegetable, meat, and dairy refrigerators. These refrigerators hold a 30-day supply of perishable foods. 9. SUPPLIES FOR SHIP OPERATION. =a. Diesel oil.= The Diesel oil tanks hold 506 tons of fuel. (See table II.) Normal consumption is figured at one-half pound per 1 hp per hour. There is enough oil for approximately a 60-day cruise. =b. Fresh water.= The ship’s tanks hold 536 tons (249,500 gallons) of fresh water. This supply is maintained by the evaporator which is capable of supplying 3,000 gallons of fresh water every 24 hours. =c. Food.= The ship usually carries enough food for a 30-day period. Dry stores, such as canned goods, flour, sugar, etc., are stowed in storage bins on the second platform deck. =d. Linens.= The ship’s laundry facilities are adequate only for the ship’s personnel. The linen lockers hold a 30-day supply of linens. 10. EQUIPMENT FOR PERFORMING MISSION. =a. General.= This paragraph describes the more important items of this equipment and tells how it is used. To perform its mission of starting port repairs, the ship contains completely equipped machine, carpenter, blacksmith, pipe, and welding shops in addition to a large assortment of miscellaneous equipment for various jobs. [Illustration: _Figure 16. One of the life rafts mounted on skids. Each can accommodate 20 persons, and carries rations, water, and signaling devices. (See FM 21-22.)_] =b. Machine shop.= The machine shop is located below the number 2 hatch (fig. 6) and contains lathes, drills, milling machine, shaper, punch and shear machine, cutters, and grinders. (See fig. 22.) All this equipment has complete sets of accessories and tools. The I-beams athwartship at number 2 hatch are removable, permitting portable equipment to be hoisted from or lowered to the machine shop. Here are brief descriptions of the more important items of the machine-shop’s equipment.