| Year | February 1943 |
| Vehicle Type | Heavy Self-Propelled Infantry Gun |
| Origin & Designer | Czechoslovakia/BMM |
| Numbers Produced | 90 |
| Crew | 5 (Commander, 2 x Gunner, 2 x Loader & Driver) |
| Main Armament | 1 x 150mm L/12 sIG33 Infantry Gun |
| Main Armament | [@sponson_traverse] |
| Elevation | -3° to +72° |
| Turret Traverse | [@turret_traverse] |
| Gun Traverse | 10° |
| Gun Mount | [@gun_mounts] |
| Maximum Range | [@maximum_range] |
| Armour Penetration | [@armour_penetration] |
| Gun Sight | Rblf36 |
| Secondary Armament | 1 x 7.92mm MG34 |
| Smoke Discharger | [@smoke_discharger] |
| Ammunition Carried | 15 x 150mm & 600 x 7.92mm Rounds |
| Height | 2.40m |
| Width | 2.16m |
| Length | 4.61m |
| Combat Weight | 11.500 kg |
| Ground Clearance | 0.40m |
| Fording Depth | 0.90m |
| Trench Crossing | 1.86m |
| Obstacle Clearance | 0.80m |
| Climbing Ability | 30° |
| Radio | FuG-16 |
| Armour | Hull Front: 50mm Hull Sides: 15mm Hull Rear: 15mm Hull Top: 8mm Hull Bottom: 8mm Gun Compartment: Gun Mantle: 12mm Front: 15mm Sides: 12mm Rear: Open Top: Open |
| Engine | Praga EPA/2 (Petrol) |
| Transmission | 5 Forward & 1 Reverse |
| Maximum Road Range | 185 km |
| Maximum Cross Country Range | 140 km |
| Maximum Water Range | [@maximum_water_range] |
| Maximum Road Speed | 35 kph |
| Maximum Cross Country Speed | 13 kph |
| Maximum Water Speed | [@maximum_water_speed] |
| Variants | [@variants] |
| Notes | The Grille sIG33 Ausf H was another first attempt to construct a self-propelled infantry gun on a tank chassis. As with previous models the armament was to be the 150mm sIG33 and the chassis was from the Czech built Panzer 38(t) Ausf H. The chassis was initially used on the Marder III in which the engine was centrally mounted, this meant that the gun to be mounted more forward. It featured an open topped fighting compartment which also carried the crew and limited supply of ammunition. The sIG33 Ausf H saw service in North Africa, Italy, Russia and France. |