USS Guard may refer to:
, purchased by the U.S. Navy in 1861 as USS National Guard; renamed in 1866; final decommissioning

Ship decommissioning

To decommission a ship is to terminate her career in service in the armed forces of her nation. A somber occasion, it has little of the elaborate ceremony of ship commissioning, but carries significant tradition....

 in 1878; sold in 1883, a tug built for the United States Coast Guard

United States Coast Guard

The United States Coast Guard is a branch of the United States Armed Forces and one of the seven U.S. uniformed services. The Coast Guard is a maritime, military, multi-mission service unique among the military branches for having a maritime law enforcement mission and a federal regulatory agency...

 at the Mare Island Naval Shipyard

Mare Island Naval Shipyard

The Mare Island Naval Shipyard was the first United States Navy base established on the Pacific Ocean. It is located 25 miles northeast of San Francisco in Vallejo, California. The Napa River goes through the Mare Island Strait and separates the peninsula shipyard from the main portion of the...

; served in the U.S. Navy during World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

; returned to the Coast Guard in 1919; decommissioned and sold in 1943, a wooden motor launch

Motor Launch

A Motor Launch is a small military vessel in British navy service. It was designed for harbour defence and submarine chasing or for armed high speed air-sea rescue....

 built in 1902; purchased as Floyd Hurst by the U.S. Navy in 1918; served as dispatch boat between Washington Navy Yard

Washington Navy Yard

The Washington Navy Yard is the former shipyard and ordnance plant of the United States Navy in Southeast Washington, D.C. It is the oldest shore establishment of the U.S. Navy...

 and the Indian Head Naval Proving Ground; renamed, then sold in 1921