During the remainder of the month she performed minesweeping, screening, and control duties as powerful American naval and ground forces wiped out Japanese resistance on Engebi, Eniwetok, and Parry Islands.

James M. Gilliss served at Okinawa until November; and, following destructive typhoons in September and October, she provided important survey work off the battered island.

Assigned to duty with the U.S. Atlantic Fleet, she departed San Francisco 23 November and arrived Norfolk, Virginia, 23 December.

From March 1947 to May 1950 she operated from the North Atlantic to the Caribbean, and she participated in coastal surveys off Newfoundland, Mexico, Cuba, and Trinidad.

From 1953 to 1958 she operated primarily in Chesapeake Bay, conducting training exercises and testing and evaluating precise navigation equipment.

In addition she operated along the Atlantic Coast from Massachusetts to North Carolina, and during November and December 1956 she trained in the Caribbean out of Guantanamo Bay, Cuba.