Atle class icebreaker
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| Icebreaker Atle Icebreaker Atle | |
| Class overview | |
|---|---|
| Builders: | Wärtsilä shipyard, Helsinki |
| Operators: | Swedish Maritime Administration |
| In commission: | 1974– |
| Completed: | 5 |
| Active: | 5 |
| General characteristics | |
| Type: | Icebreaker |
| Displacement: | 9,500 t (9,350 long tons) |
| Length: | 104.6 m (343 ft 2 in) o/a |
| Beam: | 23.8 m (78 ft 1 in) |
| Draft: | 7.3–8.3 m (24–27 ft) |
| Installed power: | 16.2 MW (21,700 hp) |
| Propulsion: | Diesel-electric |
| Speed: |
19 knots (22 mph; 35 km/h) maximum 14 knots (16 mph; 26 km/h) service |
| Bollard pull: | 190 tonnes |
| Bunker capacity: | 2,200 m³ |
| Endurance: | 6–8 weeks |
The Atle class comprises five icebreakers built for the Swedish and Finnish Maritime Administrations, government agencies that provide services to the transport sector by keeping the sea lanes open and safe. The two Finnish ships, Urho and Sisu, are sometimes considered a separate class, but all are operationally identical.
The ships were built at the Aker Finnyards in Helsinki, Finland and entered service in the mid to late 1970s. The maneuvering system, incorporating dual rudders and dual bow thrusters, represented significant technical innovation. They are also notable for their high level of crew comfort (for their time), to a point where Urho has served the Finnish government as a VIP transport.
Ships
- Atle, Sweden, commissioned 1974
- Urho, Finland, commissioned 1975
- Frej, Sweden, commissioned 1975
- Sisu, Finland, commissioned 1976
- Ymer, Sweden, commissioned 1977
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