CCGS Louis S. St-Laurent (French: NGCC Louis S. St-Laurent) is a Canadian Coast Guard Heavy Arctic Icebreaker. Louis S. St-Laurent’s home port is St. John’s, Newfoundland and Labrador and is stationed there with other vessels of the coast guard. Named after the twelfth Prime Minister of Canada, The Right Honourable Louis St. Laurent, PC CC QC LLD DCL LLL BA. The vessel is classed a “Heavy Arctic Icebreaker” and is the largest icebreaker and flagship of the CCG. Louis S. St-Laurent is based at CCG Base St. John’s in St. John’s, Newfoundland. The vessel’s current operation tempo consists of summer voyages to Canada’s Arctic where she supports the annual Arctic sealift to various coastal communities and carries out multi-disciplinary scientific expeditions. During the winter months, Louis S. St-Laurent sometimes operates in the Gulf of St. Lawrence to aid ships in transiting to Montreal, Quebec, although she usually only serves this assignment during particularly heavy ice years.nSince entering service in 1969, the icebreaker has been compelled to go through several refits in order to keep her in service. In November 2020 the federal government announced that it would endeavour to keep the vessel in service through the 2020s. Refits were planned to take place at the Davie Shipyard over three 5-month dry-docking periods in 2022, 2024 and 2027 respectively, with an alongside work period in 2023.