The HMAS Sydney was an Australian World War II cruise that sank in a battle with the German DKM Kormoran in 1941. With the entire crew having gonde down with the ship, sinking of the Sydney marked the largest loss of life on a warship in the history of the Royal Australian Navy.

The wreck of the Sydney was found on March 15, 2008, off the coast of Steep Point. The search crew, comprised of governmental and private interests, discovered the wreckage of the Kormoran the day before. Both wreckage sites have been preserved as war graves.