A fur-bearing animal of the weasel family. Sea Otter retained her mercantile name during her service in the United States Navy.
(SP-781: t. 6; 1. 40'; b. 100'1"; dr. 3'6"; s. 10 k.; cpl. 5; a. 1 1-pdr., 1 mg.)
On 11 June 1917, soon after the United States entered World War I, Sea Otter, a wooden boat built during 1911 by Britt Brothers, Lynn, Mass., was acquired by the Navy from Hugh L. Willoughby of Newport, R. I.; and placed in service the same day.
Sea Otter served as a supply vessel on the east coast of the United States until placed out of service at war's end. Struck from the Navy list on 7 November 1919, Sea Otter was sold on 16 January 1920 to Joseph Guild of Boston.