For the next 22 months, YMS-170 operated among the islands of the southeastern Caribbean performing minesweeping operations, escorting warships and merchantmen, conducting antisubmarine patrols and miscellaneous other minor duties.
YMS-170 remained active for 22 consecutive months in the southeastern Caribbean, where it conducted various duties such as clearing mines, escorting naval and commercial ships, and patrolling against submarines, along with performing other smaller responsibilities.