What Is the OTO 76/62? The World’s Most Widespread Medium-Calibre Naval Gun
The OTO 76/62 is Leonardo’s 76 mm weapon system from the OTO Melara heritage — the world’s most widespread medium-calibre naval gun. Mounted on hundreds of warships against both surface targets and incoming missiles and aircraft, the gun becomes a modern close-in air-defence weapon in its Super Rapid and DART guided-ammunition versions.
Product Identity
| Manufacturer | Leonardo (OTO Melara) |
| Type | 76 mm naval gun |
| Origin | Italy |
| Calibre / barrel | 76 mm / 62 calibre |
| Versions | Compact, Super Rapid, Strales (DART) |
| Production | Active |
What the OTO 76/62 Is
The OTO 76/62 is a versatile medium-calibre gun that fits every class of warship from patrol boat to frigate. Its high rate of fire (up to 120 rounds per minute in the Super Rapid version) makes it effective against both surface targets and low-flying missiles and aircraft. The DART guided round, used with the Strales system, turns the gun into a close-in weapon system (CIWS) able to hit incoming missiles.
Technical Specifications
| Feature | Value |
|---|---|
| Calibre | 76 mm |
| Barrel length | 62 calibres |
| Rate of fire | Super Rapid: ~120 rounds/min |
| Mission | Surface / air / missile defence |
| Guided ammunition | DART (Strales system) |
Mission Profiles
The OTO 76/62 performs surface engagement, naval gunfire support, air defence and last-ditch defence against incoming anti-ship missiles. The fact that a single gun combines so many roles on one platform makes it indispensable for small-to-medium warships constrained by space and weight.
Leonardo’s Role
The OTO 76/62 is a system Leonardo has developed and built under the OTO Melara brand for decades. Continuous modernisation (Super Rapid, Strales/DART, stealth turret versions) has made Leonardo a worldwide reference in naval gunnery.
Operators
| Country / Region | Status |
|---|---|
| Italy | Lead operator |
| 50+ navies | Active |
| Turkey | Active (on many ships) |
| USA (former OF-76 / Mk 75) | Historical |
Competing Systems
| System | Maker | Country | Difference |
|---|---|---|---|
| Mk 110 (57 mm) | BAE Systems/Bofors | Sweden/USA | Smaller calibre, high rate of fire |
| AK-176 | Russian industry | Russia | Eastern-market 76 mm equivalent |
| 76 mm indigenous gun work | Aselsan/MKE | Turkey | Turkish indigenous equivalent (in development) |
Turkey Relationship
The OTO 76/62 is a system actively used on many ships of the Turkish Navy — one of Leonardo’s most concrete product touchpoints with Turkey. At the same time, Turkey is pursuing indigenisation in naval gunnery; domestic naval-gun and ammunition work by Aselsan and MKE aims to reduce this dependence over time. The OTO 76/62 is therefore seen as a system that is currently part of the Turkish fleet but is targeted for substitution by indigenous alternatives in the long run.
Strengths and Weaknesses
Strengths: exceptionally widespread use, multi-role flexibility, missile-defence capability via DART guided ammunition, and broad integration experience. Weaknesses: indigenous gun programmes closing national markets, and alternative calibres like 57 mm preferred by some navies.
Frequently Asked Questions
What missions does the OTO 76/62 perform?
Surface engagement, air defence and last-ditch defence against incoming missiles.
Can the OTO 76/62 hit missiles?
Yes; with the Strales system and DART guided ammunition it can serve as a close-in weapon against incoming anti-ship missiles.
Does Turkey use the OTO 76/62?
Yes; it is used on many Turkish Navy ships, though Turkey is moving toward indigenisation with domestic gun and ammunition work.
Sources
Leonardo (OTO Melara) official product pages; Naval News, Janes (2024-2026).
