HMCS Sans Peur was an armed yacht that served with the Royal Canadian Navy (RCN) during World War II on both coasts.

The vessel was constructed as a yacht in 1933 for Ernest G. Stanley at the John I. Thornycroft & Company yard in Woolston, Southampton, United Kingdom and initially named Trenora.

[2] The yacht was ordered for construction from John I. Thornycroft & Company at their yard in Woolston, Southampton, United Kingdom by Dr. Ernest G. Stanley, a nephew of Rudyard Kipling.

[2] Completed in August 1933, the vessel was named Trenora by Stanley and was acquired by him to help support the lagging shipbuilding industry during the Great Depression.

The Duke of Sutherland used Sans Peur to visit his business holdings in British Columbia while on a world cruise with a friend.

The vessel's captain had managed to refloat Sans Peur and anchor it, but a hole had been opened in the bottom and the ship lay partly flooded.

The duke turned his ship over to the British Admiralty at Vancouver in September 1939 and departed by train for eastern Canada to return to the UK.

[1] To augment the local sea defences of East Coast ports, the Royal Canadian Navy (RCN) sought large, steel-hulled yachts to requisition.

The offer was accepted and the yacht was taken into RCN on a charter from the British Ministry of War Transport, initially costing the Government of Canada 569 pounds, 10 shillings per month.

Originally intended for local defence, the lack of capable Canadian ships led the armed yachts to be assigned to seaward patrol missions.

Later that month, on 20 June, I-26 shelled a lighthouse at Estevan Point on the British Columbia coast, Sans Peur was dispatched with the corvette Timmins to track and destroy the submarine.

[14] The yacht then underwent an extensive refit and in late 1943, after the threat from Japan had subsided on the west coast, the RCN decided to send Sans Peur east.

Accompanied by New Glasgow, the two ships departed Esquimalt on 24 January 1944 and arrived at Halifax, Nova Scotia on 6 February via the Panama Canal.

Additionally, the armed yachts stationed at Cornwallis would escort the ferry Princess Helen on the run between Saint John, New Brunswick and Digby, Nova Scotia after the sinking of Caribou.

Registered under a Panamanian flag by the owners, Equipment & Supply Company from New York City, the ship reverted to its original name Trenora.

Trenora was used by the family as their personal yacht but also put up for charter with the Duke and Duchess of Windsor, Henry Ford and Count Marzotto all spending time aboard.