Rheinmetall won the contract in 1933 to build the heavy guns to arm the divisional batteries. Production didn't start right away as priority was given the the 15-cm schwere Feldhaubitze 18.
The army was happy with the range, but not with the carriage. There was a special transport carriage for just the gun when traveling long distances. Putting it on it's turntable took even more time to assemble.
Rate of fire was low at two rounds per minute.
Due to the carriages short comings, many of the K 18s were placed in coastal defenses or garrison divisions.
Special rounds with red dye were created to help in marking and ranging the guns.
Production of the K 18 ended well before the end of the war as heavier guns were prefered.
|15 cm Kanone 18|
|Length of gun||26' 10.8"
|Length of bore|
|Weight traveling||41,226 lb
|Weight in action||27,470 lb
|Elevation||-2° to +43°|
|Range of shell||26,800 yards
|Shell weight||94.8 lb