Used on wasp class lhd, ticonderoga class cg (47), nimitz class cvn, forrestal class cv, los angeles class ssn (688), austin ship class lpd-4 amphibious transport docks, spruance class dd (963), oliver perry class ffg, emory s. land class as, arleigh burke class ddg. 2.187" overall length 2.062" overall width weapon system essential