RV Mirai

Mirai on 27 December 2007
History
Japan
Name	Mutsu
Namesake	Mutsu, Aomori
Ordered	17 November 1967[1]
Builder	Ishikawajima-Harima Heavy Industries, Tokyo, Japan[1]
Yard number	2107[1]
Laid down	27 November 1968[1]
Launched	12 June 1969[1]
Completed	4 September 1972 (fuel loaded)
Decommissioned	1992
Fate	Rebuilt as the research vessel Mirai
Japan
Name	Mirai
Namesake	Japanese for "future"
Owner	Japan Agency for Marine-Earth Science and Technology[2]
Builder	Mitsubishi Heavy Industries, Shimonoseki, Japan (new stern section)[1]
Completed	1 October 1997[1]
Identification	IMO number: 6919423 MMSI number: 431939000 Call sign: JNSR[2]
Status	In service
General characteristics (as Mutsu)
Type	General cargo ship
Length	130 m (427 ft)
Beam	19 m (62 ft)
Draught	6.9 m (23 ft)
Depth	13.2 m (43 ft)
Installed power	36-megawatt Mitsubishi PWR (LEU <= 4.44%[3])
Propulsion	Steam turbine, 10,000 shp
Speed	17 knots (31 km/h; 20 mph)
Crew	80
General characteristics (as Mirai)[1][4]
Type	Research vessel
Tonnage	8,706 GT 3,419 NT
Length	128.5 m (422 ft)
Beam	19 m (62 ft)
Draught	6.9 m (23 ft)
Depth	10.5 m (34 ft)
Ice class	1A
Installed power	4 × Daihatsu 6DKM-28 (4 × 1,838 kW)
Propulsion	Diesel-electric, two shafts Controllable pitch propellers
Speed	18.3 knots (33.9 km/h; 21.1 mph) (maximum) 16 knots (30 km/h; 18 mph) (service)
Range	12,000 nautical miles (22,000 km; 14,000 mi)
Crew	34 crew 46 research personnel

RV Mirai is a Japanese oceanographic research vessel. She was originally built as the nuclear-powered general cargo ship Mutsu [jp],^[5] but never carried commercial cargo.^[6]