(MB: t. 46; 1. 74'; b. 14'; dr. 4'6"; a. 2 1-pdrs.)
Sayonara 11, a motor boat built in 1916 by George Lawley and Sons, Neponset, Mass. was acquired by the Navy on 25 April 1917 on a $1.00 a month lease from Charles Blum of New York City. Designated SP587, she was placed in service on 8 May, Chief Boatswain R. F. Grassie, USNRF, in charge, and assigned to the 1st Naval District for section patrol duty. After the end of World War I she remained on duty in that district until she was placed out of service in March 1919 and returned to her owner.