(SP-610: t. 15,1. 51'1~", b. 10'0"; dr. 2'10"; s. 22 k.; cpl. 8;a. 1 1-pdr.)
Nelansu, a motor boat built by R. Bigelow, Monument Beach, Mass., was acquired by the Navy under free IPase from John S. Kent 20 July 1917 for service on section patrol during World War I. She operated in the 1st Naval District based at Boston throughout her service. She was placed out of service 30 November 1918 and was returned to her owner.