30.5 cm MRK L/22
…Kanone (MRK). It was a rifled breech loader built-up gun with a Krupp cylindroprismatic sliding breech. It was a further development of the earlier 30.5 cm RK L/22 that Krupp had developed and exhibited at the 1873 Vienna World's Fair. In 1873, the German Navy concluded that for the coastal artillery, it would…