The USS Muliphen (AKA-61), or the "Mighty Mule," was a 459-foot long Andromeda Class cargo ship built in 1944. The 7,360-ton vessel was designed to support amphibious operations and was capable of carrying 24 boats for this purpose. The Muliphen saw action in the Pacific theater towards the end of World War II. She participated in landings at Okinawa, Iwo Jima, and the Philippines. After several more decades of service, she was stricken from the Naval list on January 1, 1977. On November 2, 1988, she was towed to Ft. Pierce in preparation of her sinking as an artificial reef. On January 20, 1989, she was scuttled almost equidistant from the inlets at Ft. Pierce and Stuart in approximately 190 feet of water.

The wreck of the Muliphen is massive. Her main deck is encountered at 135 feet on the port side and about 150 feet on the starboard side due to the 30-degree list to starboard. Her bow is pointing east, with the stern to the west; this creates an easy target to drift into with the generally northward current. The mass of the ship slamming into the bottom created a deep crater along the perimeter of the ship. Anchor lines drape over the starboard rail and out into the sand. Abundant gag grouper swarm about the wreck, as well as healthy populations of sheepshead, angelfish, snapper, and spadefish. Numerous cargo holds allow exploration into the interior, and her superstructure produces extensive penetration potential. The fore and aft towers reach to within 90 feet of the surface. The wreck of the Muliphen is definitely a wonderful dive when conditions are favorable.