A buoy tender is a type of vessel used to maintain and replace navigational buoys. The name is also used for someone who works on such a vessel and maintains buoys.
The United States Coast Guard uses buoy tenders to accomplish one of its primary missions of maintaining all U. S. Aids to Navigation (ATON).
The Canadian Coast Guard uses multi-use vessels (icebreaker and navigation aid) with the buoy tender platform.
Buoy tender Wikipedia
United States Coast Guard240' USCGC Mackinaw (WLBB-30)
225' USCG Seagoing Buoy Tender (WLB)
175' USCG coastal buoy tender (WLM)
100' USCG inland buoy tender (WLI)
100' USCG inland construction tender (WLIC)
75' River Buoy Tender (WLR)
75' Inland Construction Tender (WLIC)
65' River Buoy Tender (WLR)
65' Inland Buoy Tender (WLI)
49' Buoy Utility Stern Loading Boat (BUSL)
Other miscellaneous Aids to Navigation Boats
Canadian Coast Guard272' CCGS Ann Harvey
272' CCGS George R. Pearkes
228' CCGS Earl Grey
228' CCGS Samuel Risley
198' CCGS Alexander Henry
180' CGS Aberdeen
179' CCGS Simcoe
180' CGS Simcoe
144' CCGS C.P. Edwards
125' CCGS Brant
66' CCGS Cove Isle
United States Coast Guard Bibliography and links on buoy tenders.