USS Merrimack (AO-37)
Kennebec-class fleet oilers built during World War II
The third USS Merrimack (AO-37) (ex-Caddo) was one of five Kennebec-class fleet oilers (also known as a type T2 tanker) built during World War II for service in the United States Navy. She also service in the Cold War. She was named after the Merrimack River in Massachusetts and New Hampshire.
Construction, acquisition, and commissioning
Merrimack was laid down as SS Caddo under Maritime Commission contract on 12 September 1940 by Bethlehem Steel Company, Sparrows Point, Maryland. She was launched on 1 July 1941 and acquired by the U.S. Navy from Socony-Vacuum Oil Company (later Mobil Oil) on 31 December 1941. She was renamed Merrimack on 9 January 1942, and commissioned 4 February 1942.
Service history
Assigned to the Atlantic Fleet, the new fleet oiler spent the next two-and-a-half years steaming the Atlantic seaways carrying oil for Allied ships from Argentia, Newfoundland to Montevideo, Uruguay, and from ports along the United States East Coast to staging areas in the British Isles and the Mediterranean. Her primary duty was fueling the escorts which protected Allied convoys from German U-boats.
Merrimack's most memorable crossing began on 23 October 1942 from Hampton Roads, Virginia, when she sailed with the Southern Attack Group of the Western Naval Task Force for Operation Torch, the invasion of North Africa. Twice during the passage she refueled the ships of the task force.
“USS Merrimack (AO-37)” enters the record as kennebec-class fleet oilers built during World War II. Crown Archives preserves that source wording while asking what Merrimack, AO-37 and Kennebec-class can confirm, complicate or overturn.
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Contemporary correspondence, administrative files and participant testimony can test how later narratives organized the event or institution. The source revision retrieved here is dated Dec 14, 2025. The linked authority identifier is Q7871746. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1940, 1941 and 1942.
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This entry incorporates text from “USS Merrimack (AO-37)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.