HMCS Elk was an armed yacht serving with the Royal Canadian Navy during the Second World War.

She was used initially as a patrol vessel, but later saw use as a training and guard ship for submarines on the East Coast of Canada.

The vessel was powered by two diesel engines, each driving one shaft, giving the yacht a maximum speed of 15 knots (28 km/h; 17 mph).

[2] After failing to acquire any British vessels at the outset of the Second World War for auxiliary purposes, the Royal Canadian Navy discreetly searched the American market for suitable ships.

Commissioned on 10 September 1940 at Halifax, Nova Scotia they renamed her Elk, in common with the conventions where armed yachts took the names of animals native to Canada.

[3] In September 1942 Elk and fellow armed yacht HMCS Husky were providing the main escort for ships travelling from Sydney to Halifax.

Registered in Saint John, New Brunswick, the vessel was renamed Grand Manan III and was placed in service as a short-haul passenger ferry.