KUROSHIOII 



LENGTH: 11.8 m 



BEAM: 2.2 m 



HEIGHT: 3.2 m 



DRAFT: 1.9 m 



WEIGHT (DRY) 12.5 tons 



OPERATING DEPTH: 200 m 



COLLAPSE DEPTH: 365 m 



LAUNCH DATE: 1960 



. . 538 mm 

 96 man-hr 

 . . tethered 

 1 



HATCH DIAMETER: 



LIFE SUPPORT (MAX): 



TOTAL POWER: 



SPEED (KNOTS): CRUISE 



MAX 2 



CREW: PILOTS 2 



OBSERVERS 2 



PAYLOAD: NA 



PRESSURE HULL: The main section of the hull is a cylinder of soft steel (SM41)14mmthick; 1,482-mm OD and 5,600-mm length. One end plate 

 is a hemisphere of soft steel 24 mm thick and 1,3Q0-mm radius. The other end plate is a cone of soft steel. The hatch coaming is a cylinder of soft 

 steel 12 mm thick, 550.mm OD and 1,000 mm high. All components are joined by electrical welding. 



BALLAST/BUOYANCY: Two ballast tanks fore (240 I) and aft (180 I) within pressure hull are flooded and pumped dry of seawater to obtain 



desired surface weight. A main tank (6,000 I) below the pressure hull is filled with seawater to capacity to obtain negative diving buoyancy. To 



ascend the ballast tanks are pumped dry and, upon reaching the surface, a low-pressure air hose from the support ship is used to blow the main tank. 



PROPULSION/CONTROL A stern-mounted, three-bladed, 800-mm diam. propeller provides lateral propulsion and is driven by a 3.2-kW, 



three-phase AC, 4006 motor. Underway lateral control is through two rudders mounted within a cylinder surrounding the propeller which is trained 



left/right. Two stern-mounted, port-starboard bow planes control vertical movement. 



TRIM: Up/down bow angles can be obtained by differential filling of the VBT's. 



POWER SOURCE: A 600 m long, 36-mm diam, cable from surface ship supplies all electrical power. 



LIFE SUPPORT: Compressed O2 is carried in a 40-1 -capacity cylinder. CO2 removal is through a 1 00-W ventilation system. 



VIEWING; Sixteen viewports throughout the vehicle ranging in diameter from six 60-mm, seven 120-mm to three 160-mm. 



OPERATING/SCIENTIFIC EQUIPMENT: Hard-wired telephone to support ship (24-V, battery-powered), battery (3-V) powered compass, tidal 

 current meter, water temperature sensor, horizontal vertical sonars. 



MANIPULATORS: None. 



SAFETY FEATURES: Main ballast tanks can be blown. Electric supply cable can be manually detached from within the pressure hull. Vehicle can 



be hoisted to surface by power cable. Marker buoy. 



SURFACE/SHORE SUPPORT: Towed by support ship to and from dive site. 



OWNER: University of Hokkaido, Hokkaido, Japan. 



BUILDER: Japanese Steel and Tube Co., Hokkaido, Japan. 



REMARKS: Operational. Kuroshio I was a tethered vehicle also, and operated from 1951 through 1960. Kuroshio II radically departs from its 

 predecessor's design, in that Kuroshio I was basically a diving bell configured for support from the surface. 



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