Atle-class icebreaker
The Atle class comprises five icebreakers built for the Swedish and Finnish Transport Agency. The two Finnish ships, Urho and Sisu, are sometimes considered a separate class, but all are operationally identical.
 Icebreaker Atle | |
| Class overview | |
|---|---|
| Builders: | Wärtsilä Helsinki Shipyard, Finland |
| Operators: |
|
| 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: |
|
| Bollard pull: | 190 tonnes |
| Bunker capacity: | 2,200 m³ |
| Endurance: | 6–8 weeks |
The ships were built by Wärtsilä Helsinki Shipyard in Finland and entered service in the mid to late 1970s. The maneuvering system, incorporating dual rudders and dual bow propellers, 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
gollark: Sure I do. Your abstract thinking is just bad. Some offense.
gollark: Some systems will conveniently go back to an equilibrium regardless of how hard you poke them. Some will not, and might just vary wildly or get stuck in one state or whatever.
gollark: That isn't actually true except in specific technical contexts.
gollark: https://upload.wikimedia.org/wikipedia/commons/6/63/Logistic_Map_Animation.gif
gollark: There's that famous "iterated logistic map" thing.
External links
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