the mine planter was transferred to the u.s. navy in march 1951 to become an auxiliary minelayer (acm / mma) under naval designation. she was then berthed at boston as a unit of the atlantic reserve fleet. while in the reserve fleet, she was redesignated mma-14, 7 february 1955, and named "monadnock", 1 may 1955; the second acm to bear this name. the ship was never commissioned and thus never bore the "uss" prefix. "monadnock" was struck from the navy list on 1 july 1960 and sold to commercial interests. in commercial service the ship was named "thiti", "amazonia" and eventually "dear" operating into the 1980s under italian registry.