Sisu was a Finnish state-owned icebreaker. Built in 1939 at Wärtsilä Hietalahti Shipyard in Helsinki, she was one of the world's first diesel-electric icebreakers. In addition to icebreaking duties, she served as a submarine tender for the Finnish Navy during the summer months until the end of the Continuation War.
In 1975, Sisu was handed over to the Finnish Navy and renamed Louhi. She was decommissioned in 1986 and sold for scrap.
| |
| History | |
|---|---|
 Finland | |
| Name | Sisu |
| Namesake | Sisu |
| Owner | Finnish Board of Navigation |
| Port of registry | Helsinki,  Finland |
| Builder | Wärtsilä Hietalahti Shipyard (Helsinki, Finland) |
| Cost | FIM 39 million |
| Yard number | 272 |
| Laid down | March 1937 |
| Launched | 24 September 1938 |
| Sponsored by | Walborg Jokinen |
| Christened | 24 August 1938[2] |
| Completed | 12 March 1939[1] |
| In service | 1939–1974 |
| Identification |
|
| Fate | Handed over to the Finnish Navy in 1975 |
 Finland | |
| Name | Louhi |
| Namesake | Louhi |
| Owner | Finnish Navy |
| In service | 1975–1986 |
| Identification | Hull number: 90 |
| Fate | Broken up |
| General characteristics [2] | |
| Type | Icebreaker |
| Displacement | 2,075 tonnes |
| Length | 65.3 m (214 ft) |
| Beam | 14.4 m (47 ft) |
| Draught | 5.1 m (17 ft) |
| Installed power | Three Atlas Polar diesel engines |
| Propulsion |
|
| Speed | 15 knots (28 km/h; 17 mph) |
| Crew |
|
| Armament | Armed during the war |
https://en.wikipedia.org/wiki/Sisu_(1938_icebreaker)
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