About this Unit
Mine Division 112 (MineDiv 112) was a United States Navy unit assigned to mine warfare operations during the Vietnam War. Activated in the mid-1960s, MineDiv 112 was composed of ocean-going minesweepers (MSOs) tasked with ensuring safe passage for U.S. and allied vessels by detecting and clearing naval mines along the coast of South Vietnam. The division participated in Operation Market Time, patrolling coastal waters to interdict enemy supply lines and prevent the mining of vital sea lanes. MineDiv 112’s efforts were crucial in maintaining maritime security and supporting amphibious and logistics operations throughout the conflict.
Historical Facts
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Formation and Purpose: Mine Division 112 (MineDiv 112) was a U.S. Navy minesweeper division established as part of efforts to keep shipping lanes open during the Vietnam War.
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Operation Market Time: MineDiv 112 played a key role in Operation Market Time, a U.S. and South Vietnamese effort to prevent the smuggling of weapons and supplies by sea to the Viet Cong.
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Home Port: The division operated primarily out of U.S. Naval Base Subic Bay in the Philippines and later from ports in South Vietnam, such as Danang and Cam Ranh Bay.
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Ships Assigned: The division typically consisted of oceangoing minesweepers (MSC/AM class), including ships like USS Leader (MSO-490), USS Conflict (MSO-426), and others.
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Dangerous Duties: Minesweeping in Vietnam was extremely hazardous due to both natural and enemy-laid mines, as well as the constant threat of ambush from shore.
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Combat Engagements: MineDiv 112 ships occasionally engaged in direct combat, returning fire when attacked by North Vietnamese or Viet Cong forces.
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Joint Operations: The division often worked alongside South Vietnamese Navy (VNN) minesweepers and patrol craft, helping to train and support local forces.
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Technological Upgrades: Many ships in MineDiv 112 were upgraded with improved sonar, minesweeping gear, and electronic countermeasures to meet the evolving threats in Vietnam.
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Legacy: The work of MineDiv 112 was crucial in maintaining the flow of supplies to U.S. and allied forces, preventing the enemy from mining vital ports and harbors.
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Humanitarian Missions: Beyond combat, MineDiv 112 ships sometimes assisted in humanitarian efforts, such as rescuing fishermen or providing medical aid to civilians along the coast.