These cutters were designed by the US Coast Guard and were, in many respects, modernized
240-footers.
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Initially this class was made up of ten cutters, all of which were transferred to Great Britain under Lend-Lease in 1941.
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Three vessels were lost while in British service, one was not returned, and the remainder turned back to the Coast Guard in 1946.
during the WW2. From what I learned they featured several variants of armament and camo. I might give a shot at drawing one or two of them if I collect enough reference material, so please feel free to PM me if you have anything to share.