Veterans, current service men and women, politicians and dignitaries have commemorated the single longest battle of the Second World War.
The names of ships lost at sea between 1939 and 1945 were read out on Sunday as the Battle of the Atlantic was remembered on Parliament Hill.
Defence Minister Rob Nicholson and Chief of Defence Staff General Tom Lawson were among the dignitaries who attended the ceremony.
The Battle of the Atlantic began on Sept. 3, 1939, when the Montreal-bound passenger ship SS Athenia was sunk by a German submarine west of Ireland, killing 188 people, including four Canadians.
In total, 2,210 members of the Royal Canadian Navy and the Royal Canadian Air Force lost their lives in the battle.