| Year | July 1936 |
| Weapon Type | Heavy Howitzer |
| Origin & Designer | Germany/Krupp |
| Numbers Produced | 711 |
| Crew | 12 |
| Calibre | 210mm |
| Elevation | -6° to +70° |
| Traverse | 360° |
| Breech | Horizontal Sliding Block |
| Recoil | Dual Recoil Hydropneumatic |
| Gun Sight | [@gun_sight] |
| Gun Mount | [@gun_mounts] |
| Carriage | Box Trail (Mörserlafette) |
| Trailers | [@trailers] |
| Gun Shield | [@gun_shield] |
| Armoured Plate | [@armoured_plate] |
| Barrel Length | 6.510mm (L/30) |
| Overall Length | [@length] |
| Width | 2.80m |
| Height | 3.10m |
| Weight | 16.700 kg (In Action) |
| Round Weight | 113 kg |
| Muzzle Velocity | 550 m/s |
| Feed | [@feed] |
| Magazine Capacity | [@magazine_capacity] |
| Practical Rate of Fire | [@practical_rate_of_fire] |
| Rate of Fire | 1 r.p.m. |
| Maximum Rate of Fire | [@maximum_rate_of_fire] |
| Maximum Ceiling | [@maximum_ceiling] |
| Maximum Ground Range | [@maximum_ground_range] |
| Maximum Range | 15.500m |
| Armour Penetration | [@armour_penetration] |
| Traction | Motorised (2 x Sd.Kfz 8s) |
| Variants | [@variants] |
| Notes | The Mrs 18 was heavy howitzer which was mounted on an innovative carriage designed for high elevation and 360 degree traverse. The weapon was accurate, robust and like all heavy howitzers it was transported in two loads. It was first produced in 1939 but production was halted mainly to focus of the 170mm K18. Production resumed again in 1943 and it served in heavy independent field batteries and as a coastal gun. |
