Issued: 5-Jan-1946, Canada Gazette
"This Rating joined the Service in the early part of the war. He has served eleven months in General Service and twenty-six months with Defensively Equipped Merchant Ships. During this time, he has served in the North Atlantic, North Pacific and South Pacific. While Petty Officer Sinclair was a Gunlayer on the S.S. Yildum in the St. Lawrence River in 1942, this vessel was attacked by a submarine. Its torpedoes were avoided and the submarine was eventually sighted. It was due to the gunfire directed by this rating that the Escort Vessel was able to get a position on the target. The exceptional keenness and devotion to duty of this rating has been an inspiring example to those serving with him."