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Auxiliary Mine Layers (ACM)

1922-1945

ACM-1 (Chimo) class (ACM 1-3, 5-9)
ACM-4 (Buttress) (ACM-4)

Other ACM Hull Numbers, 1920-1945

ACM-10 (Miantonomah): see CMc-5

Note: ACM 11-16 were postwar additions to the Chimo class.