The Modular Naval Artillery Concept (MONARC) program of the German defense industry studied the feasibility of mounting self-propelled artillery turrets to naval vessels.
Tank gun and artillery bore cleaning unit - photo
Mechanically-assisted howitzer loading mechanism - GIF and video
Electromagnetic railgun firing - video
6-inch gun on USS Newark - photo
Loading a 16-inch gun in 1944 - GIF
Bore cleaner for large caliber guns - GIF