Used on victorious class t-agos 19, pathfinder class t-ags 60, forrestal class cv, nimitz class cvn, sirius class t-afs 8, powhatan class t-atf 166, tarawa class lha, hayes class t-ag 195. 170' patrol coastal (pc-1) class ships. mine countermeasures support (mcs) class (lph-12).. weapon system essential