The 153′ long Crowley tug Nanuq, and her sister ship, the Tan’erliq, are part of Alyeska’s Ship Escort Response Vessel System. They are the most powerful cycloidal propulsion drive tugs in the world. Their extreme maneuverability is due to this special drive system allows them to change the direction of their thrust almost immediately. The ships were deployed in 1999.
They also have additional capabilities for firefighting, emergency response, and oil spill recovery.
[From Alaska Native Languages, Nanuq means Polar Bear and Tan-erliq means Black Bear]Height – 3.87″ [LNM]
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