USS Pasig (AW-3) was one of four water distilling ships built for the United States Navy during World War II. The lead ship in her class, she was named for the Pasig River (the second U.S. Naval vessel to bear the name) which flows through Manila on the Island of Luzon, Philippines.

 USS Pasig (AW-3) was one of four water distilling ships built for the United States Navy during World War II. The lead ship in her class, she was named for the Pasig River (the second U.S. Naval vessel to bear the name) which flows through Manila on the Island of Luzon, Philippines.

Originally laid down as SS Mission San Xavier, a Maritime Commission T2-SE-A2 tanker (MC hull 1826) by the Marinship Corporation of Sausalito, California on 18 May 1944; renamed USS Pasig (AO–91) on 3 July 1944; launched on 15 July 1944, sponsored by Mrs. John A. McCone; redesignated USS Pasig (AW–3) on 28 August 1944; acquired by the Navy from the Maritime Commission on 21 October 1944; and commissioned on 11 December 1944 with Lieutenant Commander Clarke M. Williams in command.

http://en.wikipedia.org/wiki/USS_Pasig_(AW-3)