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 require. The U.S. Coast Guard has maintained a fleet of seagoing buoy tenders dating back to its origins in the U.S. Lighthouse Service (USLHS). These ships originally were designated with the hull classification symbol WAGL, but in 1965 the designation was changed to WLB, which is still used today. Ex U.S. Army mine planters Six U.S. Army mine planters built 1917–1919 were transferred to the U.S. Light House Service during a reduction in the Army in the early 1920s. These, after absorption into the U.S. Coast Guard, became that service's "Speedwell class": Acacia (WAGL-200), ex USAMP Gen. John P. Story (shelled & sunk by a German U-boat on 15 March 1942) Ilex (WAGL-222), ex USAMP Brig. Gen. Edmund Kirby Lotus (WAGL-229), ex USAMP Col. Albert Todd Lupine (WAGL-230), ex USAMP Gen. Wallace F. Randolph Speedwell (WAGL-245), ex USAMP Col. John V. White Spruce (WAGL-246), ex USAMP Col. Garland N. Whistler The ships were in length, beam with draft displacing 1,130 tons. Early mine planters, at first termed "torpedo planters," had been modeled after USLHS vessels which had similar requirements for handling heavy loads alongside the vessels so that mine planters were easily converted to buoy work. Ex U.S. Army Chimo-class 188' mine planters 1942–1943 Built from 1942 to 1943 by Marietta Manufacturing Company, Point Pleasant, West Virginia, these U.S Army mine planters were designed for diesel engines but low pressure steam plants were installed instead. Six of the vessels were transferred to the U.S. Navy as the Chimo class. Five vessels were later transferred to the U.S. Coast Guard and refitted as the Jonquil class of buoy tenders were after World War II. USAMP General Henry Knox (MP-1) (USS Picket (ACM-8) then USCGC Willow (WAGL / WLB-332)) USAMP Colonel Henry J. Hunt (MP-2) (USS Bastion (ACM 6) then USCGC Jonquil (WAGL / WLB-330)) USAMP Colonel George Armistead (MP-3) (USS Barbican (ACM-5) then USCGC Ivy (WLB-329/WAGL-329)) USAMP 1st Lt. William G. Sylvester (MP-5) (USS Obstructor (ACM 7) then USCGC Heather (WABL / WLB-331)) USAMP Colonel John Storey (MP-8) (USS Barricade (ACM 3) then USCGC Magnolia (WAGL / WLB-328)) 180' – class ships Two classes of purpose-built, rather than refitted mine planters, Coast Guard seagoing buoy tenders have been produced.