U.S. Coast Guard International Ice Patrol.
Source: Offshore Physical Environmental Guidelines, The Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada-Nova Scotia Offshore Petroleum Board, and National Energy Board, Canada, September 2008. Regulatory Guidance
in service inspection program.
Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards