Mine planter and the earlier "torpedo planter" was a term used for mine warfare ships into the early days of World War I. In later terminology, particularly in the United States, a mine planter was a
Army M 1 Mine Planter "Hull No. 480", USAMP MP-7 Major General Wallace F. Randolph. Records (#742), Special Collections Department, J. Y. Joyner Library, East Carolina University, Greenville, North Carolina, US.
USAMP Major Samuel Ringgold, built 1904 (National Archives and Records Administration)
U.S. Army Mine Planter, Ellery W. Niles, Enroute Down the Potomac to Fort Monroe, Virginia (National Archives: Records of the Office of the Chief Signal Officer)
Col. Horace F. Spurgin (MP-14) probably around the time of turn over to U.S. Navy (photo from All Hands magazine, March 1950)
The USCG seagoing buoy tender is a type of United States Coast Guard Cutter used to service aids to navigation throughout the waters of the United States and wherever American shipping interests requi
Mine planter
…the Army and the transfer of six of these new ships to the U.S. Lighthouse Service. The former mine planters were converted to lighthouse tenders and buoy tenders. The Lighthouse Service was merged into the U.S. Coast Guard in 1939, and the former mine planters were transferred accordingly. Gen. William M. Graham…
USCGC Conifer (WLB-301) c. 1966
Launch of the Juniper-class buoy tender USCGC Oak (WLB-211)