Abstract: Two embodiments of a cartridge magazine are disclosed herein; one comprising a universal caliber cartridge housing which may be attached to interchangeable, caliber specific, dispensers adapted for receipt in the magazine opening of a conventional firearm. In a second embodiment, the cartridge housing comprises plural chambers, each provided with its own feed spring, such chambers merging into a single feed channel connected to the dispenser. To assure a coordinated merging of the cartridges within the various channels, the second embodiment includes sequential tripping devices enabling one channel after the completion of dispensing out of the other channel.

Abstract: An assembly of components that may be used in combination with a salvage vessel to raise a sunken vessel that has a steel hull from the floor of the ocean or other body of water. The sunken vessel is loosened from the ocean floor by detonating explosive charges embedded in the ocean floor by remotely operated devices while the vessel itself is fastened to hoisting cables using explosive charges to drive rivets or bolts into prepared areas of the sunken hull. The sunken vessel is drawn up towards the water's surface while two elongate propeller driven containers of variable buoyancy with a support net therebetween are provided to aid in raising the sunken vessel to a position adjacent the salvage vessel.