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voor de liefhebbers van modelbouw en submarines :)

HMS Tabard M Class (M2) submarine blueprints

The British Royal Navy M class submarines were a small class of diesel electric submarine built during World War I. The unique feature of the class was a 12-inch (305 mm) gun mounted in a turret forward of the conning tower.

They were ordered in place of the last four of the first group of steam propelled K class submarines, K17-K21, the original orders being cancelled.

They were initially intended as coastal bombardment vessels, submarine monitors, but their role had been changed before detailed design begun. The intention was that merchant ships could be engaged at periscope depth or on the surface using the gun, rather than torpedoes. At that time torpedoes were considered ineffective against moving warships at more than 1000 yards (900 m). Nevertheless it is unlikely that a well-constructed ship would be sunk by a single 12-inch (305 mm) shell hit.

pictures of the original plans :)

Thanks to Silent Steel :)