US Patent 11959725 Deep sea pressure based projectile launching system

A projectile launching apparatus for launching projectile with the pressure exerted by the seawater. The projectile launching apparatus includes a large barrel launch, a piston, one or more piston stoppers, plurality of hinged doors, piston locks, and a plurality of water pump is available at bottom of the barrel to generate pressure and help to launch the projectile, wherein the assembly for the projectile is less expensive than present systems, lighter in weight, and of less complexity.