Submarine Cannon

This cannon is the pinnacle of Rauataian nautical technology. Made of precisely-machined brass, the gun is immune to rust and unlikely to corrode. By necessity it is a breechloading weapon - the first of its kind - which allows the gunnery crew to reload the gun from without the safety of the submersible, though the ship must be surfaced to fire. A watertight muzzle cap keeps out the sea while the vessel is submerged and a lensed gunsight allows a cannoneer to accurately engage targets at long distances.