(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.
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.
