KUMUKAHI 



LENGTH: 5,9 ft 



BEAM 6.6 ft 



HEIGHT: 7.5 ft 



DRAFT: 7.5 ft 



WEIGHT (DRY): 3,700 lb 



OPERATING DEPTH: 300ft 



COLLAPSE DEPTH: 1,000 ft 



LAUNCH DATE: 1969 



HATCH DIAMETER: 18 in. 



LIFE SUPPORT (MAX): 32 man-hr 



TOTAL POWER: 5.1 kWh 



SPEED (KNOTS): CRUISE 1/4 hr 



MAX 1.3/3 hr 



CREW: PILOTS 1 



OBSERVERS 1 



PAYLOAD: 600 lb 



PRESSURE HULL: Sphere of Rohm and Haas Plexiglas G, 1 Vs in. thick, made in four parts and hot-press molded. Quarter parts bonded into a 



sphere using epoxv resin. Hull buoyancy 3,045 lb, weight in air 690 lb. 



BALLAST/BUOYANCY: A 1 50-psi pump moves water into or out of a 15-gal tank within the hull to provide 93 lb of ± buoyancy. 



PROPULSION/CONTROL: Four fixed, reversible, '/3-hp motors; 12-VDC Sears & Roebuck outboard trolling motors with minor modifications for 



kerosene-filled pressure-compensation and mounting. Two motors are mounted at the sides of the sphere for fore and aft motion. One motor is 



mounted at the top facing athwartships for transverse motion, another is mounted at the bow facing up for vertical motion. 



TRIM: None. 



POWER SOURCE: Two 18-VDC pods, each with three batteries (lead-acid) of fast drain type. Batteries are ESB Ltd 9, 143 amp-hr/6 hr built for 



golf cart use. Batteries are submerged in oil (SAE 30 motor oil) and pressure-compensated by a seawater bellows. 



LIFE SUPPORT: Two Scott Aviation O2 cylinders and two CO2 humidity scrubbers contain soda lime and silica gel (2 men, 8 hours, 0.5% CO2, 



60% rel. hum,). Instruments to check internal atmosphere are: Teledyne model 330 O2 meter, MSA CO2 tester, Taylor temperature/humidity gage, 



Taylor 2-psi differential pressure gage. 



VIEWING: Panoramic viewing through plastic hull. 



OPERATING/SCIENTIFIC EQUIPMENT: UQC (27-kHz), Directional gyrocompass and magnetic compass, depth gage. 



MANIPULATORS: None. 



SAFETY FEATURES: A 440-lb steel drop weight is located under the pods and is actuated by three turns of the thru-hull bolt. Pods and mount 



frame release with seven more turns of the same bolt. F lood valve can equalize internal pressure in 1 .5 min for blow and go ascent to surface. 



SURFACE/SUPPORT: SOO. 



OWNER: Oceanic Foundation, Makapuu Point, Waimanalo, Hawaii. 



BUILDER: Oceanic Institute, Makapuu Point, Waimanalo, Hawaii. 



REMARKS: On display at Sea Life Park, Waimanalo, Hawaii. 



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