R/V Hakuho-Maru
The new Hakuho-Maru was launched on October 28, 1988 and put in services on May 1, 1989. Ten laboratories including multi-purpose dry, semi-dry and wet labs, a freezing lab and a clean room encompass 387.71 sq. m, accommodating Seabeam, NOAA-GMS-BS satellites receiver, isotope treatment facilities, acoustic biomass survey system, CTD, Doppler current meter, liquid N2 tank, multi-channel seismic profiler, 3.5 kHz subbottom profiler, SSBL acoustic transponder system, ocean floor imaging system, gravimeter, high-precision gyroscopes, and data processing system linked with navigation instruments by LAN and Ethernet. A research room equipped with word processors and meeting facilities is also installed. It was built to replace the old Hakuho-Maru with a size of 3,200 gross tons completed in March 1967 and operated until the end of the fiscal year 1988. Between 1967 and 1988 the old Hakuho-Maru completed 99 scientific cruises (together with 9 sea trial cruises) with 1,178,035.4 km of total cruising distance. Total 3,643 scientists (1,332 inside the institute and 2,311 from the outside organizations) have utilized this vessel during its 22 year working period of 1967 to 1988.
Operating Characteristics of R/V Hakuho-Maru
- Keel Laid: May 9, 1988
- Launched: October 28, 1988
- Completed: May 1, 1989
- Gross Tonnage: 3,987 tons
- Length (o.a.): 100.00 m
- Length (b.p): 90.00 m
- Breadth (mld.): 16.20 m
- Depth (mld.): 6.35 m
- Draft (mld.): 6.00 m
- Cruising Speed: 16 knots
- Complement: 89 including 35 Scientists
- Propulsion System: Diesel for cruising; Electric for slow speed and dynamic positioning
- Engine: 1,900 ps x 720 rpm x 4
- Motor: 460 kW x 12P x 2
- Propeller: 4-wing skewed CPP x 2
- Twin shaft and twin rudder
- Bow Thruster: 4-wing CPP, 187 rpm x 2
- Stern Thruster: 4-wing CPP, 251 rpm x 1
- Main Generator: for propulsion, 1,550 KVA (1,085kW) x 2 ; for electric power, 893.75 KVA (715 kW) x3
- Electric power supply: AC 450V 3 ø 60 Hz x 2 [main], AC 100V 80 KVA 60 Hz x 2, AC 115 V 6 KVA 400 Hz x 2 [precision]
- Navigation: Gyro compass, Radar and ARPA, Auto-pilot device, Joystic control system, Auto-nav. system including Loran C, NNSS, GPS, Doppler Log, EM Log, Data logger and track display
- Deck Gears:
- Heavy duty winch with 15,000 m of 14 mm ø steel wire
- Armored cable winch with 12,000 m of 8.15 mm ø Ti-wire for CTD
- Hydrographic winch with 12,000 m of 6.4 mm ø Ti-wire
- Heavy duty winch with 7,000 m of 9 mm ø steel wire
- Rope winch for 6,000 m x 14 mm ø nylon rope
- BT winch with 1,000 m x 3 mm ø steel wire [removable]
- Nonmagnetic rubber-coated cable winch for magnetometer, 700 m x 16 mm ø
- BT winch with 1,500 m x 3 mm ø steel wire [bow starboard]
- A-shaped stern gantry: 7.0 m (W) x 8.0 m (H), 11 ton max. load
- Side-beam for starboard deck work: 4 m stroke, 11 ton max. load
- Deck crane: aft #2 deck with 3 tons max. capacity x 1
Constructed by: Mitsubishi Heavy Industries Co., Ltd. (Shimonoseki Shipyard and Engine Works)
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