Japanese icebreaker Shirase (AGB-5003)
|Laid down:||15 March 2007|
|Launched:||16 April 2008|
|Commissioned:||20 May 2009|
|General characteristics |
|Displacement:||Approx. 20,000 tons|
|Length:||138 m (452 ft 9 in)|
|Beam:||28 m (91 ft 10 in)|
|Draft:||9.2 m (30 ft 2 in)|
|Propulsion:||Diesel-electric Four propulsion motors, 22,000 kW (30,000 hp) (combined) Two shafts; fixed-pitch propellers|
|Speed:||19.5 knots (36.1 km/h; 22.4 mph) (maximum) 3 knots (5.6 km/h; 3.5 mph) in 1.5 m (4.9 ft) ice|
|Capacity:||80 scientists 1,100 tons of cargo|
|Aircraft carried:||3 helicopters|
She was launched in April 2008 and commissioned in May 2009 with the hull number AGB-5003. She began her first voyage on 10 November 2009 (Japan Standard Time).
In Japanese, the name "Shirase" is written in hiragana. Due to a JMSDF internal naming rule, an icebreaker must take its name from a place. Accordingly, Shirase is said to take its name from Shirase Glacier. This glacier bears the family name of Lieutenant Nobu Shirase, a Japanese pioneer of Antarctic exploration.
In February 2013, anti-whaling group Sea Shepherd Conservation Society claimed Shirase was sent to monitor its interference with the Japanese cetacean research fleet. However, according to the National Institute of Polar Research, the icebreaker was in fact far to the west off the coast of Antarctica near the Showa Base, at the time. The Japanese Government subsequently confirmed that the vessel was not involved in any operation related to the whaling program, and that Sea Shepherd's claims were "completely fake".
On 17 February 2014, Shirase ran aground just off the unmanned Molodyozhnaya Station in Antarctica. While the outer hull was penetrated, the vessel was in no danger of sinking and no fuel oil leakage has been reported.
- Yamauchi, Y.; Shigeya, M. (2011). "The Icebreaking Performance of Shirase in the Maiden Antarctic Voyage" (PDF). Proceedings of the Twenty-first (2011) International Offshore and Polar Engineering Conference. Archived from the original (PDF) on February 24, 2014.
- 砕氷艦「しらせ」除籍記念特集サイト [Special site memorializing retired icebreaker "Shirase"] (in Japanese). Japan Maritime Self-Defense Force. Retrieved 10 February 2010.
- 世界有数の砕氷船「しらせ」 [The world's foremost icebreaker "Shirase"] (in Japanese). National Institute of Polar Research. p. 1. Retrieved 10 February 2010.
- 遠藤知子 (November 2003). 南極観測船しらせ（晴海埠頭） [Antarctic observation ship Shirase (Harumi Pier)] (in Japanese). Akita Prefecture. Retrieved 10 February 2010.
- Darby, Andrew (25 February 2013). "Military icebreaker arrives to defend Japanese whalers". The Age. Retrieved 25 February 2013.
- "Shirase". National Institute of Polar Research. Retrieved 9 May 2015.
- "Japan's friendship". The Australian. 2 March 2013. Retrieved 9 May 2015.
-  Archived March 28, 2013, at the Wayback Machine.
- Shirase runs aground off Antarctica. NHK World, 17 February 2014. Retrieved 2014-02-19.[dead link]