| Year | 1943 |
| Weapon Type | Multiple Rocket Launcher |
| Origin & Designer | Germany/State Factories |
| Numbers Produced | 954 |
| Crew | 6 |
| Calibre | 301mm |
| Elevation | -13° to +45° |
| Traverse | 22° |
| Breech | [@breech] |
| Recoil | [@recoil] |
| Gun Sight | [@gun_sight] |
| Gun Mount | [@gun_mounts] |
| Carriage | Fixed Trail |
| Trailers | [@trailers] |
| Gun Shield | [@gun_shield] |
| Armoured Plate | [@armoured_plate] |
| Barrel Length | [@barrel_length] |
| Overall Length | [@length] |
| Width | [@width] |
| Height | [@height] |
| Weight | 1.800 kg |
| Round Weight | 127 kg (30cm Wk Spr 4491) |
| Muzzle Velocity | 330 m/s |
| Feed | [@feed] |
| Magazine Capacity | [@magazine_capacity] |
| Practical Rate of Fire | [@practical_rate_of_fire] |
| Rate of Fire | Six Rounds every five minutes |
| Maximum Rate of Fire | [@maximum_rate_of_fire] |
| Maximum Ceiling | [@maximum_ceiling] |
| Maximum Ground Range | [@maximum_ground_range] |
| Maximum Range | Minimum Range: 400m Maximum Range: 4.550m |
| Armour Penetration | [@armour_penetration] |
| Traction | Motorised (Sd.Kfz 10) |
| Variants | [@variants] |
| Notes | The 30cm NbW 42 was mounted on the same carriage as the 28/32cm NbW 41. It had six launcher racks mounted in twin sections each containing three 300mm rockets. |