Oerlikon GDF
| Oerlikon GDF | |
|---|---|
Swiss 35 mm Oerlikon twin cannon | |
| Type | Autocannon |
| Place of origin | Switzerland |
| Service history | |
| In service | 1963–Present |
| Used by | See Operators |
| Wars | Iran-Iraq War Falklands War South African Border War 2025 India-Pakistan conflict |
| Production history | |
| Designer | Oerlikon |
| Manufacturer | Oerlikon |
| Produced | 1958–present |
| Specifications | |
| Mass | 6,700 kg (14,800 lb) (with ammunition) |
| Length | 7.8 m (25 ft 7 in) (travelling) |
| Barrel length | 3.15 m (10 ft 4 in) (barrel) |
| Width | 2.26 m (7 ft 5 in) (travelling) |
| Height | 2.6 m (8 ft 6 in) (travelling) |
| Crew | 3 |
| Shell | Complete round: 35×228mm, 1.565 kg (3 lb 7 oz) |
| Caliber | 35 mm (1.4 in) |
| Action | Gas-operated |
| Carriage | 4 wheels with outriggers |
| Elevation | −5°/+92° |
| Traverse | Full 360° |
| Rate of fire | 550 rounds/min (per barrel) |
| Muzzle velocity | 1,175 m/s (3,850 ft/s) (HEI-T) |
| Effective firing range | Ceiling: 4,000 m (13,000 ft) |
The Oerlikon GDF or Oerlikon 35 mm twin cannon is a towed anti-aircraft gun made by Oerlikon Contraves (renamed as Rheinmetall Air Defence AG following the merger with Rheinmetall in 2009). The system was originally designated 2 ZLA/353 ML but this was later changed to GDF-001. It was developed in the late 1950s and is used by around 30 countries.