The second USS Tacony (SP-5) was an armed yacht that served in the United States Navy as a Section patrol vessel from 24 May 1917 to 29 November 1918.

[3] Sybilla II was built with the necessary requirements for the popular power boat racing of the time but with more attention to features associated with general cruising and leisure comfort.

Two staterooms were located aft with a "lobby" passageway and additional sleeping area and a fully equipped bathroom.

Auxiliary boats were a fifteen-foot mahogany tender carried on port side davits and a stern hung twelve foot dinghy.

[1] In 1917 the U.S. Navy acquired the motor yacht from her owner on a free lease for service in World War I and commissioned her as USS Tacony (SP-5) on 24 May 1917.