an outline silhouette of a military combat naval submarine in black

backdrop background battleship battleships black blue charger chargers combat computer cruise cruiser deep depth depths destroy destroyer detect explode explosion fight frequencies frequency generated graphics illustration isolated knot knots mile miles military nautical naval navy nuclear ocean outline outlines periscope periscopes radar radio resonate sea seas shadow shape shaped shapes silence silent silhouette sonar sound soundwave soundwaves stealth sub submarine submarines submerge submerged torpedo torpedoes under underwater undetected unseen vibrate vibration warfare warship warships water wave waves white