- AM-56, AM-406, MHC-51, AMS-28/MSC(O)-28) USS Osprey II (SP-928) USS
Ossahinta (YT-278/YTB-278) USS Ossipee (1861, WPG-50) USS Ostara (AKA-33) USS Osterhaus...
- (YT-273)
Pokagon (YT-274)
Epanow (YT-275)
Tavibo (YT-276)
Onockatin (YT-277)
Ossahinta (YT-278)
Penacook (YT-279)
Tuscola (YT-280)
Peshewah (YT-281) Piomingo...