• Railway guns

• Total view
• Transport
• Sluiskil
• "Herkules"

• German guns
• K 5
• K 12
• Theodor
• Gustav
• Siegfried
• SKC/34
• SKL/40
• SKL/45
• Kurze Bruno
• Schwere Bruno
• Lange Bruno
• Theodor Bruno
• Neue Bruno

• French guns
• K 454 (f)
• K 486 (f)
• K 557/558 (f)
• K 592/605 (f)
• K 674 (f)

Kanone K 12

This guns were made by Krupp. The first gun was designated as the K 12 V. The V stands for "Versuch", the tryout version. This gun had a steel cable along the barrel to provide for extra stiffness. It was operational in March 1939. The second gun, the K 12 N, was ready in July 1940. The steel cable wasn't neccesary anymore due to changes to the hydraulic system.