The third USS Powhatan was a steam tug that served in the United States Navy from 1898 to 1928, was renamed USS Cayuga in 1917, and was later designated YT-12.
Powhatan, formerly Penwood, was built in 1892 by the Maryland Steel Company, Baltimore, Maryland. She was purchased by the United States Navy on 8 April 1898 and commissioned on 20 April 1898. Powhatan was first attached to the Auxiliary Naval Force based at Pensacola, Florida, from 11 June 1898 to 8 August 1898. Later she was assigned to the Pensacola Navy Yard as yard tug. In 1900 Powhatan served the Marine Hospital Service, United States Department of the Treasury, as a quarantine vessel at Reedy Island, Delaware. She returned to the U.S. Navy in 1901 as yard tug at the New York Navy Yard
On 1 December 1906 she was involved in a minor collision with a float off Pier 4 in the North River, causing slight damage to her port side.[1] On 11 June 1908 the barge Canister that she was towing had a minor collision with the ferry off South Ferry in the East River.[2] On 2 January 1909 she had a minor collision with tow steamer in the East River off Pier 7, Brooklyn doing $300 in damage to Hiawatha. Powhatans captain was charged with violation of pilot rules and tried on 20 January.[3]
On 1 September 1917 her name was changed to USS Cayuga. She was later given the alphanumeric hull number YT-12. Cayuga continued to be stationed at the New York Navy Yard until decommissioned on 20 April 1928. She was sold for scrapping on 5 June 1928.