The Dorsey class highspeed minesweepers were converted from Wickes class fleet destroyers, the Chandler class was converted from Clemson class destroyers and the Ellyson class from Gleaves class destroyers. On the first two classes, a false stern was added to make room for the swwwp gear by building out the sides of the stern and forming a semi-boxed stern. Also, the after gun and all antisubmarine warfare equipment was removed. On the Ellyson class, the after turret was removed, but a depth charge rack on the port side was kept. Also, the torpedo tubes on all classes were removed.
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