The RCN expanded substantially during the Second World War, with the larger vessels transferred or purchased from the US and British navies (many through the Destroyers for Bases Agreement), and the smaller vessels such as corvettes and frigates constructed in Canada. By the end of the conflict Canada had the third-largest navy in the world, behind the United States and the United Kingdom, but only two ships larger than destroyers, the light cruisers HMCS Uganda and HMCS Ontario. Although it showed its inexperience at times during the early part of the war, a navy made up of men from all across the country, including many who had never before seen a large body of water, proved capable of exceeding the expectations of its allies. By the end of the Battle of the Atlantic, the RCN was the primary navy in the northwest sector of the Atlantic Ocean and under the command of Rear Admiral Murray was responsible for the safe escort of innumerable convoys and the destruction of many U-boats — an anti-submarine capability that the RCN would build upon in post-war years. The Norwest Atlantic theatre was the only theatre not under command of either a Brit or American during the entire war – http://en.wikipedia.org/wiki/History_of_the_Royal_Canadian_Navy#Second_World_War
Tags: RCN, Royal Canadian Navy, World War II, World War Two, WWII, navy, Canada, Battle of the Atlantic, HMCS, military