SP-3000 



LENGTH: 5.7 m 



BEAM: 3.04 m 



HEIGHT: 2.1 m 



DRAFT: 2.1 m 



WEIGHT (DRY): 8 tons 



OPERATING DEPTH: 3,000 m 



COLLAPSE DEPTH: 4.570 m 



LAUNCH DATE: 1970 



HATCH DIAMETER: 0.4 m 



LIFE SUPPORT (MAX): 144 man hr 



TOTAL POWE R : 380 amp hr 



SPEED (KNOTS): CRUISE 0.5/12 hr 



MAX 3 



CREW: PILOTS 1 



OBSERVERS 2 



PAYLOAD: 200 kg 



PRESSURE HULL: 



tons. 



Spherical shape composed ot two hemispheres. Sphere is of Vascojet 90 steel, 2,001 -mm OD, 305 mm thick and weighs 7.35 



BALLAST/BUOYANCY: Vehicle is launched negatively buoyant and descends in a helical spiral. To obtain neutral buoyancy at operating depth a 



100-kg weight is released, to ascend an 82-kg weight is released. To obtain fine buoyancy control when submerged titanium spheres (6.8 kg each) can 



be employed to take on seamater for negatiue buoyancy, 56 weights (1.9 kg each) may be dropped individually to obtain positive buoyancy. To 



compensate for loss of positive buoyancy through hull compressibility two weights ( 1 5 kg each) may be dropped. 



PROPULSION/CONTROL: Main propulsion (forward/reverse) is provided by two, port/starboard-mounted, 3-hp, 750-rpm motors driving 



355-mm-diam. propellers. The reversible, 3-phase propeller motors can be independently adjusted to maneuver in any lateral direction. 



TRIM: Two tanks fore and aft are used to transfer 95 kg of mercury to obtain +28 up/down bow angle. 



POWER SOURCE: Pressure-compensated, Fulman-brand, type P2380, lead-acid batteries in three banks, one of 18 elements and two of 22 elements 



each. The 62 elements (cells) are in series; rated at 2 V each with a total of 380 amp-hr. Variable from 1 30 to 117 V. Forward battery pod is 



jettisonable (185 kg). 



LIFE SUPPORT; O2 is carried internally and its output is manually controlled. Cabin air is forced over a cartridge of soda lime to absorb CO2. Six 



cartridges are carried to absorb 1 l/min/man of CO2 for 24 hr minimum. Regnerated air is passed over a cartridge of CaCI (700 gm) to remove water 



vapor and reduce humidity. 



VIEWING: Two acrylic plastic ports for viewing located just below the equatorial axis and left-right of the vertical centerline forward. A smaller 



camera port is located on the equatorial axis between the viewing ports. Viewports are 1 1 0-mm ID and 100 mm thick. 



OPERATING/SCIENTIFIC EQUIPMENT: UQC (8.08-kHz), VHF transmitter, audio tape recorder, depth indicator, depth and temperature 



recorder, inclinometer, gyroscope, up/down, forward echo sounder, lateral speed indicator, CTFM sonar, 27-kHz pinger, still and cine cameras. 



MANIPULATORS: One with three degrees of freedom, 



SAFETY FEATURES: Manually jettisonable: forward battery (185 kg); trim mercury (95 kg), and all weights described for buoyancy control (320 



kg total). Emergency breathing for each occupant through a closed circuit system (2 hr each). Inflatable conning tower for a surface egress, three 



1-man life rafts, flares, smoke signal, life jackets, surface flashing light, radio signal. 



SURFACE SUPPORT: SOO 



OWNER; Centre National Pour I' Exploitation des Oceans (CNEXO), Paris. 



BUILDER; Centre de I'Etudes Marine Advancees (CEMA), Marseilles, France. 



REMARKS; Operating. Renamed CYANA tn 1 974, participated in the French-American program (FAMOUS) of exploration on the Mid-Atlantic 



Ridge. 



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