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 operational for 22 months in the southeastern Caribbean, where it carried out a range of duties including clearing mines, protecting naval and commercial vessels, patrolling against submarines, and performing smaller tasks.