The HMAS Perth is 133 metres long (437 feet), has a beam of 14.3 metres (43 feet), a height of 46 metres (151 feet) and a displacement of 4900 tonnes. It was built in Michigan USA in 1962, and had a crew of 333 (21 officers and 312 sailors). The HMAS Perth was scuttled on 24th November 2001 in King George Sound, some 500 metres off Seal Rock in 38 metres of water. Her mast protrudes above the surface, and she still carries one of her original 5"/54 calibre single gun mounts.
The creation of the Artificial Reef sees the combination of two historic maritime icons - Albany and HMAS Perth.