USS Sayonara II

USS Sayonara II (SP-587) was a United States Navy patrol vessel in commission from 1917 to 1919.

Sayonara II was built as a private motorboat of the same name by George Lawley & Son at Neponset, Massachusetts, in 1916. On 25 April 1917, the U.S. Navy acquired her under a $1.00 (USD)-per-month lease from her owner, Charles Blum of New York City, for use as a section patrol boat during World War I. She was commissioned as USS Sayonara II (SP-587) on 8 May 1917.

Assigned to the 1st Naval District in northern New England, Sayonara II carried out patrol duties there for the rest of World War I and into early 1919.

Sayonara II was decommissioned in March 1919 and returned to Blum on 10 April 1919.