HMCS Grizzly was an armed yacht acquired by the Royal Canadian Navy during World War II for coastal patrol and anti-submarine defence.

By June 1944, Grizzly was no longer considered safe and was sold for scrap to the Capital Iron and Metal Company of Victoria, British Columbia in December.

[3] USS Machigonne was commissioned on 9 July 1917 and employed on patrol duties along the United States East Coast.

[3] To augment the local sea defences of ports, the Royal Canadian Navy sought large, steel-hulled yachts to requisition.

Either shortly before or after arrival at Esquimalt, British Columbia the unfamiliarity with the engine design by Canadian personnel led to them being burnt out due to lubrication issues.

The yacht never received the armaments and asdic the other conversions did and was anchored at the passages into Prince Rupert, British Columbia.

[5] At Prince Rupert, Grizzly was normally anchored between British Columbia and mainland in the northern channel entering the port.

[2][7] The ship was sold in December 1944 to Capital Iron and Metal Company and broken up for scrap at Victoria beginning on 25 March 1945.