Atle-class icebreaker

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Icebreaker Atle
Class overview
BuildersWärtsilä Helsinki Shipyard, Finland
Operators
In commission1974–
Completed5
Active5
General characteristics
TypeIcebreaker
Displacement9,500 t (9,350 long tons)
Length104.6 m (343 ft 2 in) o/a
Beam23.8 m (78 ft 1 in)
Draft7.3–8.3 m (24–27 ft)
Installed power16.2 MW (21,700 hp)
PropulsionDiesel-electric
Speed
  • 19 knots (35 km/h; 22 mph) (maximum)
  • 14 knots (26 km/h; 16 mph) (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 Transport Agency. The two Finnish ships, Urho and Sisu, are sometimes considered a separate class, but all are operationally identical.[1]

The ships were built by Wärtsilä Helsinki Shipyard in Finland and entered service in the mid to late 1970s.[1] 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[1]
  • Urho, Finland, commissioned 1975[1]
  • Frej, Sweden, commissioned 1975[1]
  • Sisu, Finland, commissioned 1976[1]
  • Ymer, Sweden, commissioned 1977[1]

References

  1. ^ a b c d e f g Harald, Patrik (2020-10-24). "Sverige och Finland planerar nya isbrytare – nu avgörs framtidens teknik". Hufvudstadsbladet (in Swedish). Retrieved 2024-07-12.
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