WNUS_4-50_mk9.htm
4-inch/50-caliber gunAA-1-class submarineAylwin-class destroyerBalao-class submarineCaldwell-class destroyerCassin-class destroyerClemson-class destroyerGato-class submarineO'Brien-class destroyerSampson-class destroyerTambor-class submarineTucker-class destroyerUSS Semmes (DD-189)United States S-class submarineV-boatWickes-class destroyer