Princess Alice, Countess of Athlone and her husband Alexander Cambridge, 1st Earl of Athlone, who served as Governor General of Canada from 1940 to 1946, attended an exhibition tennis match at the Britannia Boating Club. In 1940–41, the Royal Canadian Navy Reserves scheme for training Yacht Club Members developed the first central registry system. A Royal Canadian Air Force crash launch, a 16-foot motor launch, was stationed at the Britannia Boating Club. The Britannia Boating Club's Basketball team were the Ottawa Champions in 1941. In 1941, the bridge to the Club pier was built. The Club installed lights on two of the five tennis courts. In 1942, with Don McDiarmid, Canadian tennis champion serving with the Royal Canadian Air Force, the traditional McDiarmid Family Tennis Tournament was cancelled for duration Approximately 100 of Malak Karsh`s photos of the Britannia Boat Club c 1940s are in the Library and Archives Canada collection. The Karsh photographs depict a race from Britannia 1940, Britannia Beach 1941, Britannia Boat Club in 1942, 1946, and 1948 and the Britannia Boating Club Construction of 1948. On July 18, 1942, there was a meeting of 17 BBC members, in army and civilian war jobs during World War II, at Holborn Restaurant in London, England. In 1944, the Princess Alice Barracks Cabin at Britannia Bay provided a summer home for Royal Canadian Air Force Airwomen during World War II close by the BBC's facilities for tennis, dancing and boating. Rented from the King's Daughter's Guild of Ottawa, the cabin featured 60 beds, a separate cookhouse and dining pavilion. In 1945, the Club hosted a 50th anniversary cabaret with acts such as 'Miss Britannia', Hawaiian dance, Scottish Dances, Sailorettes and Arabs and cabaret dancers. In 1946, the Britannia Boat Club hosted the first Canadian Dinghy Association Regatta. Exhibition tennis matches featuring tennis stars Don McDiarmid, Edgar Murphy, Eddie O'Hara and Sonia Swift marked the opening of the new lighted tennis courts at Britannia Boating Club on August 14, 1946. In 1946, the Britannia Boating Club Memorial Park Association was formed to honour Club members killed overseas. For example, Captain Percy Royston Gilman died on June 10, 1944, one of 335 officers and men of the 3rd Canadian Division who were killed in action or died of wounds on that day. On July 28, 1947, Club members performed 'The Reluctant Mariner', by George Orr, a takeoff of Gilbert and Sullivan's