From: Dictionary of American Naval Fighting Ships, Vol. I p 53

Aquamarine

Aquamarine, a gem, is a transparent beryl, typically bluish green in color.

Aquamarine (PYc-7) was built in 1926 by Pusey and Jones Corp., Wilmington, Del., as Seawolf; acquired by the Navy 13 January 1941: and commissioned 9 April 1941, Lieutenant G. A. Lange in command.

Assigned to the Naval Research Laboratory, Bellevue, D. C., Aquamarine assisted in experimental work, chiefly underwater sound. Although most of her experiments were conducted on the Potomac River and Chesapeake Bay, she also operated off New London, Conn., (16 October -- 4 November 1943), and off the Florida coast and in the Bahamas {24 January 1944 -- 18 April 1945). During 1945 and 1946 Aquamarine had additional duty as special tender to the Presidential Yachts Potomac and Williamsburg.

Aquamarine was decommissioned 21 June 1946 and transferred to the Maritime Commission 31 January 1947.