USCGC William Tate (WLM-560) is a Keeper-class coastal buoy tender of the United States Coast Guard.

[3] The Coast Guard exercised options for the fifth through tenth ships, including William Tate, in February 1997.

Keeper-class ships were the first Coast Guard cutters equipped with Z-drives, which markedly improved their maneuverability.

[4] Her tanks can hold 16,385 gallons of diesel fuel[9] which gives her an unrefueled range of 2,000 nautical miles at 10 knots.

This gives William Tate the ability to hold position in the water even in heavy currents, winds, and swells.

[1] William Tate, as all Keeper-class ships, has a strengthened "ice belt" along the waterline so that she can work on aids to navigation in ice-infested waters.

Higher grades of steel were used for hull plating in the ice belt to prevent cracking in cold temperatures.

[16] He has a unique place in history as the host of the Wright Brothers in Kitty Hawk, North Carolina during their early experiments in flight.

[17] The Coast Guard took ownership of William Tate on 16 September 1999, and placed her "in commission, special" status.

[25] The bulk of William Tate's year is spent at sea tending its buoys, or in port maintaining the ship.

In early 2012, William Tate was dispatched to perform an underwater search for the sunken fishing boat Mandy Ness.

[27] William Tate led the parade of ships and served as the floating command post for the OpSail 2000 celebration in Philadelphia.

William Tate was dispatched to prevent river traffic from approaching the collapse, and to serve as a dive platform.

[29] After the September 11, 2001 terrorist attacks, William Tate took on an expanded security role patrolling the Delaware River.

[24] William Tate trained with the Delaware and New Jersey State Police on 16 September 2011 in a mass evacuation scenario.

These include: During May 2007, William Tate hosted 80 Navy JROTC cadets for a one day cruise as part of their training.