Soon after World War I broke out the Soviet government was in dire need of ships with ice breaking capacity, It placed orders with British shipyards and at the same time began a campaign of purchasing icebreakers on the open market. Soviet representatives first went to Ottawa and purchased the icebreakers Earl Grey and Minto. They then purchased from the Reid Newfoundland Company the icebreaking mail steamers Bruce and Lintrose. They then began negotiations with A. J. Harvey and Co. for the purchase of Bellaventure, Bonaventure, and Adventure and with Job Brothers for Beothic and Nascopie. They purchased all except for Nascopie which continued her supply route to service the Hudson Bay operations.
In 1916, when chartered by the government of France, and carrying cargo from Russia to Newfoundland, she encountered a German U-boat, and exchanged gunfire. She drove off the U-boat, but was credited with sinking it, at the time. George E. Mack (1887–1941) a keen amateur photographer, joined the HBC in 1910, he served on the Nascopie twice, firstly as Second Officer in 1912, then again as Captain from 1915 to 1920; first as Master and then as Ice Master/Pilot, when he became a Superintendent of the Hudson's Bay Company from 1920 to 1928. He took many photographs of the local communities the ship visited.
In 1934 Nascopie took for the first time a Governor of the company to ever visit Hudson Bay. HBC Governor Patrick Ashley Cooper and his wife joined her in Montreal and sailed as far as Churchill. In 1937, the ship enabled the Hudson's Bay Company in establishing Fort Ross. Sailing from the east, she met the schooner Aklavik, which had sailed from the west into Bellot Strait. This meeting of the two ships at Fort Ross, brought into reality for the first time the Northwest Passage.
During the second World War, she was fitted with anti-aircraft gun, and a 3.7 inch Naval gun, she was used to ship carry cryolite for making Aluminum for the war effort.
Nascopie was wrecked near Cape Dorset near the southern tip of Baffin Island on an uncharted reef, July 21, 1947.
https://wantedonthevoyage.blogspot.com/2023/07/arctic-lifeline-hbss-nascopie.html comprehensive design and operation history of the Nascopie with many photographs