Ice navigation vessel

Ice navigation vessel is a class of ships specially prepared for independent ice navigation in the waters of the polar seas and for following icebreakers in especially difficult ice conditions.[1] The geometry of the hull contours of ice navigation ships is intermediate between the contours of an icebreaker and the shape of a conventional transport vessel.

Cargo ship navigating in ice, Gulf of Bothnia
Icebreaking bow of the tanker Timofey Guzhenko without cargo in the port

Their reliability is determined by their ability to withstand the loads acting on them while sailing in ice at a given speed, as well as the loads from compression by ice masses.[2] The target capabilities determine the requirements for enhanced capacity of the power plant, the strength of the hull, propellers, propeller shaft and steering gear. It may also include adaptations for functioning in freezing conditions and equipment necessary for navigation in ice.

Various registration authorities assign ice classes to vessels based on their technical characteristics.[3] Due to this, ice navigation vessels are usually referred to as ice-class vessels without indicating which class they belong to, but indicating the type of vessel (e.g. ice-class tanker, ice-class cargo ship etc).[4]

See also

References
  1. "СПГ танкеры: перевозка сжиженного природного газа в Арктике | // LNGas.ru" (in Russian). Archived from the original on 2017-12-31. Retrieved 2017-12-30.
  2. "В ледовых условиях" (in Russian). morvesti.ru. Retrieved 2023-03-14.
  3. Unified Requirements for Polar Class ships Archived 2012-06-20 at the Wayback Machine. International Association of Classification Societies (IACS), April 2016. Retrieved 2017-03-11.
  4. BySubhodeep Ghosh (January 1, 2021). "Understanding Design of Ice Class Ships // Naval Architecture". Marine Insight - The Maritime Industry Guide. Retrieved 2023-03-15.
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