C-23 



PHOCAS II 

 (Photo Optical Cable-Controlled Submersible) 



Operating Depth: 300m (98U ft) 



Dimensions (Lw WxH): 200cm x 80cm x 80cm (79 in. x 32 in. x 32 in.) 



Weight (dry) : 22Tkg (500 lbs) 



Speed: 1.5 kts (2.8 km/hr) (submerged) 



Structure : Rectangular-shaped, open, tubular aluminum framework 



encloses and supports all components. 



Buoyancy: Fourteen, 20cm (8 in.) diameter Nokalon floats provide 



surface and subsurface buoyancy. Altitude near-bottom is controlled 



by a combination of a drag chain and pneumatically controlled variable 



ballast tank, extra floats can be added. 



Pover Requirements: 5 KW, 380/220 VAC (3 or single phase), 50 Hz. 



Propulsion: Two, stern-mounted horizontal thrusters provide forward/ 



reverse and yaw motion. Each thruster is powered by a one half hp 



electrical motor. Vertical (up/down) movement is obtained by the 



drag chain/VBT combination. 



Instrumentat ion : TV camera, 35mm still camera (both moimted on a common 



tilt mechanism), downward looking echo sounder, ^00 w thallium iodide 



light (TV), 160 ws strobe light (still camera), magnetic compass, 



depthometer, transponder interrogater . Manipulator with 3 degrees- 



of- freedom is being designed for collection of bottom samples. 



Navigation : By visual sighting, magnetic compass and interrogation (bearing 



and range) of a transponder suspended from the support vessel. 



Shipboard Components: Control/display console, 2 KVA (220 V, 50 Hz) 



generator, cable drum and winch, 9 KVA 3-phase diesel generator available. 



Support Ship Requirements: Air supply of lUO cu ft (H cu m) at 



3,000 psi (211kg/sq cm), electrical power supply and one half ton 



containerized support and cabin space for navigation/control console 



of 7-6 cu ft (0.2 cu m). 



Operating/Maintenance Crew: 1 operator, 1-2 for handling 



Total Shipping Weight: No information available 



Total Shipping Volume : No information available 



Status : Operational 



Builder: Geologinen Tutkimuslaitos 



Otaniemi 



Finland 



