DOWB 



LENGTH: 1 7 f t 



BEAM; 8.75 ft 



HEIGHT: 1 1 .0 f t 



DRAFT: 5.0 ft 



WEIGHT (DRY): 9.4 tons 



OPERATING DEPTH: 6,500 ft 



COLLAPSE DEPTH: 10.000 ft 



LAUNCH DATE: 1968 



HATCH DIAMETER; 20 in. 



LIFE SUPPORT (MAXI; 195 man-fir 



TOTAL POWER; 40 kWh 



SPEED (KNOTS); CRUISE 1/26 fir 



MAX 2/6 hr 



CREW; PILOTS 1 



OBSERVERS 2 



PAYLOAD: 580 lb 



PRESSURE HULL: Spherical shape of HY-100 steel, 82 in OD and 0.935 in. thick. 



BALLAST /BUOYANCY: Two water ballast hard tanks are used to provide 3,330 lb of positive buovancv at the surface. The variable ballast trim 



system is composed of a hard tank and oil-filled bladders. This system is used primarily to adjust for small changes in displacement, but can be used 



to adjust for a difference of up to ± 2'/a in trim. This system can achieve a maximum of 512 tb of positive or negative buoyancy. Shot ballast (900 



lb) is used for ascending and descending. 



PROPULSION/CONTROL: Four ducted main propulsion motors provide four degrees of maneuvering freedom, these are; forward and reverse 



thrust, vertical thrust and yaw. The two horizontal propulsion units are located port and starboard in the plane of the deck, canted outward at 1 5 . 



The two vertical thrusters are located fore and aft with their axes normal to the plane of the deck. The propulsion motors deliver 2 SHP to 



18-in.-diam. propellers at 486 rpm. 



TRIM: By transferring oil (used to obtain fine buoyancy control) between fore and aft soft bladders, up/down bow angles of ±2.5 may be 



obtained. 



POWER SOURCE: Twenty externally-mounted, pressure-compensated, 12-\/, lead-acid batteries provide 43.2 kWh of 120 VDC. This voltage is 



converted to 1 1 5 VAC, 60 Hz, single phase. One auxiliary battery (silver-zinc) provides 1.82 kWh of 30 VDC for emergency use and is located within 



the pressure hull. 



LIFE SUPPORT: O2 (160-scf) is carried within the pressure hull and operates together with the CO2 removal system which consists of a forced 



ventilated scrubber stack containing 25 lb of LiOH. Atmospheric monitoring is conducted continuously and automatically by an O2 concentration 



indicator, a thermometer, a hydrometer and an aircraft altimeter. 



VIEWING: Two optical ports located directly amidships and at the bow afford a total coverage of 360° through an internal periscope system. This 



optical viewing system provides a full 4-pi solid angle visibility through 180°-wide-angle objectives mounted outboard of the viewports. 



OPERATING/SCIENTIFIC EQUIPMENT: UQC, gyrocompass, scanning sonar, upward-looking and downward-looking Fathometers, closed circuit 



TV (camera mounted on manipulator), video tape recorder, 



MANIPULATORS: One manipulator possessing six degrees of freedom can pick up a 50-lb load at its maximum reach of 49 in. 



SAFETY FEATURES: Emergency breathing system consisting of closed circuit breathing connected to main O2/CO2 removal system. The 



following components are droppable; shot ballast, batteries, pan and tilt mechanism. 



SURFACE/SHORE SUPPORT: Was supported at sea by the R/V SWANN, a 135-ft (LOA), 250-ton displacement ex-U.S. Navy patrol craft. 



OWNER: Santa Barbara City College, Santa Barbara, California. 



BUILDER: A.C. Division, General Motors Corp., Santa Barbara, California. 



REMARKS; Inactive. Used for student training. 



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