Oerlikon Millennium 35 mm Naval Gun System
The Rheinmetall Oerlikon Millennium Gun or Rheinmetall GDM-008 is a close-in weapon system designed by Rheinmetall Air Defence AG (formerly known as Oerlikon Contraves) for mounting on ships. It is based on the 35/1000 revolver gun land-based air defense system and uses Advanced Hit Efficiency And Destruction (AHEAD) ammunition.
Also recorded as Rheinmetall Oerlikon Millennium Gun
Oerlikon Millennium 35 mm Naval Gun System

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- Name
- Rheinmetall Millennium Gun
- Field
- Oerlikon KD series 35mm cannon · close-in weapon system
- Region
- Switzerland
VALÉORINE Encyclopedia
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Documentary summary
The Rheinmetall Oerlikon Millennium Gun or Rheinmetall GDM-008 is a close-in weapon system designed by Rheinmetall Air Defence AG (formerly known as Oerlikon Contraves) for mounting on ships. It is based on the 35/1000 revolver gun land-based air defense system and uses Advanced Hit Efficiency And Destruction (AHEAD) ammunition.
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wikidata · Q4030990 · wikipedia · Rheinmetall Oerlikon Millennium Gun
In this article
Key facts
Key facts
• Name — Rheinmetall Millennium Gun • Origin — Switzerland • Type — CIWS • Is Ranged — yes • Is Artillery — yes • Service — 2003–present • Used By — Danish Navy Venezuelan Navy Indonesian Navy • Design Date — 1995 • Manufacturer — Rheinmetall Air Defence, Oerlikon Contraves • Developed Into — Rheinmetall Oerlikon Skyranger 35 • Weight — Gun: 450 kg Installation: 3300 kg • Length — 5.5 m • Width — 2.39 m • Height — 1.94 m • Crew — unmanned • Cartridge — 35×228mm • Caliber — 35 mm • Barrels — Singular • Action — Gas-operated four-chamber revolver cannon • Rate — Single shot Rapid Single Shot: 200 rounds per minute Burst (automatic fire): 1000 rounds per minute • Velocity — AHEAD: 1,050 m/s HEI: 1,175 m/s APDS/T: 1,440 m/s • Range — 3500-5000 m • Feed — 252 linkless rounds in installation • Elevation — -15 / +85 degrees rate: 70 degree/s • Traverse — 360 degrees rate: 120 degrees per second
Current operators
Current operators
• Denmark (7) • 7 used by the Royal Danish Navy. •, 2 ships with 2 Millennium Gun each •, 3 ships with 1 Millennium Gun each • Indonesia (4) • 2 used by the Indonesian Navy, 2 ordered for new ships. • (SIGMA10514-class), 2 ships with 1 Millennium Gun each • Balaputradewa-class frigate, 2 ships in construction, 1 Millennium Gun each • Venezuela (6) • 8 guns purchased, 6 remain in service with the Venezuelan Navy. • (Avante 2200-class), 3 ships in service, 1 removed from service, 1 Millennium Gun each • (Avante 1400-class), 3 ships in service, 1 lost, 1 Millennium Gun each
Future operators
Future operators
• Bulgaria (2) • 2 to enter service with the Bulgarian Navy: • 2 MMPV 90 corvettes in construction, 1 Millennium Gun each • Romania (2) • 2 to enter service with the Romanian Naval Forces: • Romanian frigate Regele Ferdinand and Romanian frigate Regina Maria (F222), 1 Millennium Gun each • Saudi Arabia (5) • 5 to enter service with the Royal Saudi Navy: • (Avante 2200-class), 5 ships to enter service service, 1 Millennium Gun each
Retired
Retired
• United States • Experimental ship from Lockheed Martin and the Office of Naval Research. • 1 Sea Slice experimental ship, 1 Millennium Gun
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
- Switzerland
Description
A device at the muzzle end of the barrel measures the exact speed of each round as it is fired, and automatically sets the fuse to detonate the round as it approaches a pre-set distance from the target. Each round disperses 152 small tungsten projectiles weighing 3.3 g each to form a lethal cone-shaped cloud to strike the incoming target. Whilst these are too small to do major damage in themselves, the accumulation of damage from multiple strikes is expected to destroy wings and control surfaces, sensors and aerodynamics, causing the target to crash. Other firing modes are designed to be effective against surface targets such as small fast attack boats. The weapon is designed to be controlled by an external fire-control system using either radar or electro-optical trackers. It is fitted with an optional onboard observation TV camera which relays imagery to an operator console from which it can also be aimed and fired in an emergency mode. The computer system uses an open architecture and is claimed to be compatible with many existing fire control systems. The gun's ammunition capacity allows it to engage 10 anti-ship missiles or 20 surface targets.
Primary material
Documents and archives
reference work
- “Rheinmetall Oerlikon Millennium Gun”, English Wikipedia, consulted as further reading
Reputable secondary · Wikipedia
authority record
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.weaponsystems.net. 35mm Millenium - Oerlikon GDM-008.
- 2.The Naval Institute Guide to World Naval Weapons Systems, 1997-1998 - Norman Friedman
- 3.CIWS: The Last Ditch Defense
- 4.The 35mm Rheinmetall Oerlikon Millennium Gun 27 May 2015
- 5.Rheinmetall Defence.
- 6.Absalon class - archived report.
- 7.Denmark’s Absalon-class Flexible Frigates. U.S. Naval Institute. 2021-11-01.
- 8.SHIPS AND PLATFORMS. navalteam.dk.
- 9.Iver Huitfeldt class Guided Missile Frigate Royal Danish Navy. www.seaforces.org.
- 10.Indonesia’s SIGMA Solution: 10514 Multipurpose Frigates. U.S. Naval Institute. 2023-02-01.
- 11.SIGMA 10514 Guided Missile Frigate, PKR - Perusak Kawal Rudal. www.globalsecurity.org.
- 12.Mitsopoulos, Dimitris. Indonesia’s Merah Putih-class Frigate: What You Need to Know. Naval News. 2025-02-11.
- 13.D-Mitch. Guaiqueri class offshore patrol boats of the Venezuelan Navy.
- 14.BVL / Guaicamacuto Class Offshore Patrol Vessels. Naval Technology.
- 15.Mitsopoulos, Dimitris. Bulgaria's First Modern Corvette Launched by Local Shipyard. Naval News. 2023-08-09.
- 16.Cătălin Grosu. Șeful Forțelor Navale, exclusiv la TVR INFO: Marea Neagră este mai periculoasă ca oricând. Amenințările s-au înmulțit, dar România și-a întărit apărarea. TVR Info. 14 August 2026.
- 17.Valpolini, Paolo. Navantia: Al Jubail first-of class corvette to be commissioned in late March in the RSNF. EDR Magazine. 2022-03-14.
- 18.MDG-351 Millennium Gun. www.globalsecurity.org.
- 19.Sea SLICE. www.globalsecurity.org.
References
Citations
References
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reference work
Partially resolvedauthority record
Unverified
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.
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