VOL-L1 



LENGTH: 32 ft 



BEAM; 6 ft 



HEIGHT: 7 ft 



DRAFT: 5.3 ft 



WEIGHT (DRY): 13 tons 



OPERATING DEPTH: 1,200 ft 



COLLAPSE DEPTH: 1,800 ft 



LAUNCH DATE: 1973 



HATCH DIAMETER: 22 in. 



LIFE SUPPORT (MAX): 192 man-hr 



TOTAL POWER: 54 kWh 



SPEED (KNOTS): CRUISE 1/13-15 hr 



MAX 5/0.5 hr 



CREW: PILOTS 1 



OBSERVERS 3 



PAYLOAD; 2000 lb 



PRESSURE HULL: Cv'indrical shape with diver lockout sphere aft. Hull composed of SA-537 grade A steel to specs, for low temperature 



operations. Hull is 0.5 in. thick; 54-in. ID and 28.5 ft long. Conning tower is 20 in. high. Hatch to diving compartment ts 24-in. diam., diver egress 



hatch is oblong and 24-in. x 26-in. diam. Helium sphere is of HY-100 steel. 



BALLAST/BUOYANCY: Internal, fore & aft tanks are pumped dry or flooded to obtain ±545 lb (aft) and ±1 70 lb (fwd) buoyancy. Main (surface) 



buoyancy is attained by venting or blowing main ballast tanks of ±650-lb capacity, 



PROPULSION/CONTROL: Main propulsion is from a stern mounted propeller driven by two 10-hp, DC electric motors which have infinitely 



variable speed control and are reversible. Two horizontal and one vertical thruster assist in maneuvering, Electrohydraulically controlled rudder and 



bow planes assist in underway maneuvering. An automatic pilot controls rudder angle to +3°. 



TRIM: I nternal, fore and aft tanks can be differentially filled to obtain up/down bow angles. 



POWER SOURCE: Three separate banks of 1 2 V, heavy duty, lead-acid batteries contained in two pressure-resistant battery pods provide 1 20 VDC 



main power {44 kWh, 20 hr) and 24-V auxiliary power (10 kWh, 20 hr). 



LIFE SUPPORT: Gaseous O2 is carried external to the hull in four tanks of 288-ft-* total capacity. COj is removed by circulating air through a 



LiOH (8.2-lb capacity) cannister, O2 is continuously monitored and CO2 is monitored periodically with Drager tubes. 



VIEWING: Six viewports in the conning tower and one in the hatch. Aft compartment has a viewport in the egress hatch and two on each side of 



the sphere. The forward endcap is fitted with an acrylic plastic dome similar to PC-8. 



OPERATING/SCIENTIFIC EQUIPMENT: UQC, gyro compass, depth gage, automatic pilot, echo sounder, scanning sonar. 



MANIPULATORS: One with five degrees of freedom. 



SAFETY FEATURES: Can blow ballast tanks dry at maximum operating depth. Battery pods are droppable (2,000 lb ea.). Medical lock in diver's 



compartment. 



SURFACE SUPPORT: Support ship the same as for PISCES I, II, III. 

 OWNER: Vickers Oceanics Ltd., Barrow-in-Furness, England. 

 BUILDER: Perry Submarine Builders, Riviera Beach, Fla. 

 REMARKS: Operational. Designated by Perry as PC-15. 



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