(6) Miscellaneous equipment in the welding shop includes a brazing and soldering set, ten 225-cubic-foot acetylene cylinders, and fifty 220-cubic-foot oxygen cylinders. =g. Diving gear and equipment.= (1) The diving equipment room is located on the main deck just aft the number 3 hatch. (See fig. 6.) In this room are lockers for diving gear, the recompression chamber, hangers for holding the diving suits, and a work table for repairing suits. [Illustration: _Figure 24. Ten-inch toolroom lathe with 4-1/2-foot bed._] (2) The recompression chamber (fig. 42) is used for testing divers’ ability to withstand pressure before diving and to decompress divers if they develop compressed-air illness (bends). [Illustration: _Figure 25. Extension-bed gap lathe, 20-by 40-inch with 14-foot bed._] [Illustration: _Figure 26. Engine lathe, 16-by 54-inch._] [Illustration: _Figure 27. Twenty-four inch universal shaper for facing, notching, keyseating, and die making._] [Illustration: _Figure 28. Radial drill with 4-foot arm and 11-inch column._] (3) For deep-sea diving, there are two No. 1 diving outfit sets. (See fig. 41.) (4) Other equipment in the No. 1 set includes an air compressor, descending and stage lines, decompression stage, telephone, diving lamp, air and telephone hose, and diving weights. (5) For shallow-water diving in depths up to 36 feet, there are four No. 2 diving outfit sets. (See figs. 43 and 44.) (6) The rest of the diving equipment includes a canvas workers set No. 1, carpenter equipment set No. 2, gasoline-engine-driven, skid-mounted air compressor with a capacity of 60 cubic feet of air per minute, electrodes for underwater cutting, a pneumatic tugger hoist for the diving stage, and a portable air lock. [Illustration: _Figure 29. Universal milling machine No. 2, horizontal._] =h. Compressed-air equipment.= (1) An assortment of compressed-air equipment is carried for doing jobs both on and off the ship. This equipment includes rock drills for drilling in rock or concrete; paving breakers used in breaking out concrete, breaking up rock, and in general demolition work; rivet busters for cutting out rivets; woodboring drills for boring various-sized holes in timbers; rotary drills for drilling holes in steel plates and beams; grinders for general grinding; pneumatic hammers for cleaning castings, beveling seams on ships, and chipping holes in concrete; riveting hammers for driving rivets; pneumatic wrenches for tightening and loosening nuts and bolts; nail drivers; chain saws adapted for cutting pilings underwater; and circular saws. [Illustration: _Figure 30. Combination punch and shear machine._] (2) For operating this equipment, there is a 315 cfm, Diesel-driven, skid-mounted air compressor and a 280 cfm, electric-driven air compressor. =i. Beach gear.=