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USS Muliphen

Wreck · Port St Lucie

27° 24.331' N 80° 00.337' W

Technical Normoxic Trimix Technical Normoxic Trimix Max 200 ft Avg 165 ft Hot Drop Today PMPoor

Details

Technical Normoxic Trimix
Minimum recommended certification
Max depth
200 ft
Average depth
165 ft
Access
Hot Drop
Sea state today
AMPoor PMPoor

Video

🎥 ISDC

Pictures 1

Where it is

27° 24.331' N 80° 00.337' W

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Wreck Details

Sunk January 21st, 1989
Cargo Ship
459 ftLength
63 ftBeam

Site description

On November 2, 1988, the U.S.S. Muliphen was transported to Fort Pierce, FL to prepare it for transformation into an artificial reef. After being thoroughly cleaned, the vessel was towed 16 nautical miles offshore to a site nearly equidistant from the Fort Pierce and St. Lucie Inlets. On January 20, 1989, it was scuttled in this location. The wreck of the U.S.S. Muliphen is truly immense. Though it remains largely upright and intact, the vessel's hull was split in two during the 2004 hurricane season, causing the bow and stern to sink almost 20 feet deeper and collapsing one of the cargo boom support towers, which once stood 90 feet below the surface. Due to a tilt to the starboard side, the ship’s main deck lies at depths ranging from 145 feet on the port side to approximately 160 feet on the starboard side. Divers can explore the wreck at a maximum depth of roughly 170 feet near the seafloor, with depths exceeding 200 feet in the trench formed by the ship's impact on the limestone bottom. Oriented with its bow pointing eastward, the wreck is a convenient target for divers, as the prevailing northward-moving current allows for relatively easy hot drops. The site teems with marine life, including abundant gag grouper, sheepshead, snapper, and spadefish. Numerous cargo holds provide opportunities for interior exploration, and the superstructure offers extensive penetration routes. When conditions are favorable, the Muliphen wreck promises a truly remarkable and rewarding diving experience.

Route & typical conditions

Route

This is a hot drop dive. One on the wreck, divers may want to discover both superstructures first (stern and midship). There are many penetration opportunities in these sections. Given its depth, the Muliphen requires a few dives to explore it. Reaching the engine room is a challenge. Only attempt it if qualified and familiar with the wreck - a guideline is highly recommended. The stern, midship and bow areas offer a surreal view to divers - consider planning multiple dives to this site.

Typical conditions

Conditions vary a lot in this site. Given it's sitting quite an distance offshore, this site usually gets strong currents. Visibility can vary also - divers have reported very low visibilities up to 100 feet plus in a span of a week. Plan for low 70s or upper 60s temperatures at the bottom.

Wreck history

USS Muliphen historic photo
The U.S.S. Muliphen was launched on May 13, 1944, by the Federal Shipbuilding and Dry Dock Company in Kearny, New Jersey, and was commissioned into the U.S. Navy on October 23, 1944. During World War II, the vessel, affectionately nicknamed the "Mighty Mule," played a significant role in key military operations. Notably, it supported the invasion of Okinawa and participated in the landings at Iwo Jima, where 11 of its landing craft were lost. After the war, the Muliphen was assigned to the Naval Transportation Service, serving for four years in the South Pacific and also navigating the frigid waters of Alaska. In 1950, the ship was transferred to Norfolk to join the Atlantic Amphibious Force. It remained in active duty until its decommissioning on August 28, 1970, after a remarkable career spanning nearly 26 years. At the time, this tenure represented the longest continuous active-duty period for any vessel in the U.S. Navy. Over its years of service, the vessel carried two official designations. In 1944, it was known as U.S.S. Muliphen (AKA-61), and by 1969, it was designated as U.S.S. Muliphen (LKA-61).

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