Adjacent to the Port Noarlunga tyre reef are two vessels which have been deliberately scuttled to enhance the dive potential of this artificial reef. The ex-tug H.A. Lumb was sunk by the Dive Industry Association in 1994 and lies approximately 30m from the reef. The fishing trawler Seawolf is located between the reef and the H.A. Lumb. It was scuttled by the Seawolves Dive Club in March 2002.