Germany 28 cm/52 (11) SK C/28 - NavWeaps

Germany 30.5 cm/50 (12) SK L/50 - NavWeaps

Germany 38 cm (14.96) SK C/34 - NavWeaps

Germany 28 cm (11) SK C/34 - NavWeaps

Germany 28 cm/52 (11) SK C/28 - NavWeaps

Russian and German large-caliber naval guns of the First World War

15 cm SK C/28 - Wikipedia

Scharnhorst-class battleship, Military Wiki

Grote's 1,000 tonne Festungs Panzer 'Fortress Tank' - Tank

40.6 cm SK C/34 gun - Wikipedia

Germany 28 cm/52 (11) SK C/28 - NavWeaps

Germany 15 cm/55 (5.9) SK C/28 - NavWeaps

Scharnhorst class battleships (1936)