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Mobile Diving and Salvage Unit One

Mobile Diving and Salvage Unit ONE (MDSU-1) was commissioned as Harbor Clearance Unit ONE in February 1966 in Subic Bay, Republic of the Philippines. The command was immediately put to the test in Vietnam. During the conflict, salvage teams conducted numerous harbor clearance operations in Vietnamese rivers, harbors and coastal areas. The unit's professionalism resulted in the command being awarded the Meritorious Unit Commendation and Navy Unit Citation.

At the conclusion of the Vietnam conflict the command was relocated to Pearl Harbor, Hawaii. In 1979 the unit's mission was expanded to include responsibility for providing diving services to all Pearl Harbor based surface ships. In January 1982 the unit's name was changed from Harbor Clearance Unit ONE to Mobile Diving and Salvage Unit ONE to better reflect the capabilities of the unit. In 1996 MDSU-1's mission was further expanded with the consolidation of the SUBASE dive locker into MDSU-1's Fleet Maintenance Dive Department, making MDSU-1 responsible for providing all ships husbandry diving services for watercraft, surface ships and submarines in Pearl Harbor.

MDSU-1 uses a diverse range of specialized diving and recompression chamber systems to accomplish its mission, including a mixed-gas diving system capable of supporting dives to a depth of 300 feet. The unit's equipment is air transportable, giving MDSU-1 the ability to respond to diving and salvage missions anywhere within CINCPACFLT area of responsibility.

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Page last modified: 05-07-2011 01:58:24 ZULU