1 photo

Air defense system

Turkey

Aselsan

GOKDENIZ CIWS

Turkish twin-barrel 35mm close-in weapon system for anti-missile and anti-drone naval defense, integrated on the Istanbul-class frigate. Performance figures are manufacturer or state-sourced and not independently verified.

Compiled from public sources ·primary reference ↗ ·last verified 2026-07-04

Procurement snapshot

Availability & export

Türkiye export-licensed

SSB-administered; growing export programme, some Western sub-component dependencies.

Channel: Direct commercial / G2G

Fielded & proven

Operator data not public

Status: active.

Lifecycle cost (est.)

No public unit price to model from. Why so few systems publish one →

Interoperability

No standardised NATO calibre / datalink detected in public specs.

Derived guidance from public data, export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.

Full specifications

Performance

Speed, range, altitude and engagement capability.

Performance specifications
Rate of fire Rounds per minute (cyclic). Higher increases suppression and hit probability.	1,100 rpm
Engagement range Maximum distance at which an air-defense system can intercept targets. Higher covers more airspace.	4 km Bottom 7% of air-defense systems

Firepower

Armament, payload and guidance.

Firepower specifications
Caliber Bore diameter of the main gun or rifle. Larger throws heavier projectiles; not simply better, ammunition commonality matters.	35 mm

Munition

Round type, penetration, velocity and projectile data.

Munition specifications
Caliber Bore diameter the round is fired from.	35 mm

Specifications compiled from public Aselsan and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-04.

Compare with rivals