The USS Merganser (AM-135) was a minesweeper serving in the United States Navy during World War II. Originally constructed as a commercial trawler named Annapolis, she was built in 1937 by the Bethlehem Steel Corporation in Quincy, Massachusetts. The vessel was acquired by the U.S. Navy through a Maritime Commission requisition purchase from the General Sea Foods Corporation of Boston, Massachusetts, on January 3, 1942. Following acquisition, she was renamed Merganser on January 18, 1942, and underwent conversion at Bethlehem Steel Atlantic Works in East Boston. Commissioned on May 23, 1942, the Merganser was assigned to the 1st Naval District, where she operated from the Woods Hole Section Base. Her primary duties involved patrolling the waters off New England, a critical area for maritime security during the war. She performed these patrol and minesweeping operations until February 1944, contributing to the safety of Allied shipping routes in the region. In May 1944, the vessel was moved to Boston for inactivation. She was decommissioned on May 1, 1944, and subsequently struck from the Naval Register on September 16 of the same year. On September 29, 1944, she was transferred to the Maritime Commission and was sold back to her former owner, the General Sea Foods Corporation. Upon returning to civilian service, she was renamed Ocean. The USS Merganser’s service highlights her role in maritime defense during World War II, primarily through patrol and minesweeping operations along the U.S. East Coast. Her transition from a commercial trawler to a military minesweeper and back to civilian use exemplifies the adaptability of such vessels during the wartime period, emphasizing their importance in maintaining secure maritime passage during a critical era.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.