HMCS Bras d'Or was an auxiliary minesweeper that served in the Royal Canadian Navy (RCN) between 1939 and 1940, when she sank with all hands in a storm.

Her first posting was to Halifax, Nova Scotia, where she was tasked to patrol the harbour approaches to free up major warships for convoy duty.

[2] Bras d'Or was posted to Rimouski, Quebec, as part of the St. Lawrence Patrol, responsible for searching shallow waters for naval mines that were believed to be laid by German U-boats.

On 17 October 1940, Bras d'Or was ordered to proceed to Clarke City, Quebec, to shadow the Romanian freighter Inginer N. Vlassopol and to ensure that she made way to Sydney, Nova Scotia.

that she had sustained unnoticed hull damage when she had run aground just outside Rimouski, and that it combined with the poor weather and sea conditions led to her destruction.

The entire Atlantic seaboard had been experiencing poor conditions, and the fishing vessel Bluebird from Newfoundland was also lost in the storm.

[4] The Royal Canadian Navy released a 225-word statement regarding the overdue Bras d'Or and provided a small biography of its captain and a recount of her capturing Capo Noli.