15 cm RK L/26

15 cm RK L/26
15 cm RK L/26 1871 model on broadside carriage
Type	Coastal artillery
Place of origin	Germany
Service history
Used by	Imperial German Navy Imperial German Army Austria-Hungary Ottoman Empire Dutch navy
Production history
Designer	Krupp
Manufacturer	Krupp
Specifications
Mass	4,000 kg[1]
Length	3,850 mm (L/26)[2]
Caliber	149.1 mm[2]
Maximum firing range	3,000 direct fire[3] 6,000 high angle fire[3]

The 15 cm Ring Kanone L/26 or Lange 15 cm Ring Kanone was a 15 cm 26 caliber long Krupp Ring Kanone (RK). It was a rifled breech loader built-up gun with a Krupp cylindroprismatic sliding breech. It was designed based on the idea that for penetrating armor, it might be more effective to increase the charge then to increase the caliber. Near the end of its development, the navy and the army chose different inner configurations for their new guns, which actually led to two different guns.