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25mm Sea Zenith



Overview


Sea Zenith

Sea Zenith on Turkish navy MEKO 200 frigate.
Source: www.ontargetalignment.com - © copyright lies with original owner

Origin
Switzerland
Type
Close-in weapon system
Entered service
1986
Status
In service
Development
1977 - 1985 (design project)
1982 (prototype production)
1985 (live fire trials)
Developer
Switzerland - Oerlikon Contraves
Production
1980's - 1990's
Producer
Switzerland - Oerlikon Contraves
Number produced
24 production models, plus prototypes
Notable users
Turkey

Description


Introduction

The Sea Zenith is a close-in weapon system of Swiss origin. It was developed by Oerlikon-Contraves around their new Oerlikon KBB autocannon.

Design

The Sea Zenith is a remote controlled gun mount, which has a distinctive lean back Y-shape. Four belt-fed 25mm KBB autocannon are fitted. Ammunition is stored on both sides. The mount allows for a high elevation.

Sensors

The sensors used with the Sea Zenith are located off mount. Sea Guard radar is used as fire control radar. All gun mounts on a ship are connected to a central fire control system.

Firepower

Sea Zenith is fitted with four 25mm Oerlikon KBB autocannon. These fire the long and powerful 25x184mm round. Various types of ammunition are available. APDS is used in the Sea Zenith, with a muzzle velocity of over 1.300 m/s. Each KBB has a cyclic rate of fire of about 800 rpm. Combined rate of fire 3.200 rpm. Effective range is about 2 km.

Users

The Turkish navy was the only one to adopt the Sea Zenith. It is fitted on two classes based on the MEKO 200 design. Each ship is fitted with three Sea Zenith gun mounts.

Details


Facts Sea Zenith
General
Origin
Switzerland
Type
Close-in weapon system
Ordnance
Type
4x 25mm Oerlikon KBB autocannon
Rate of fire
3.200 - 3.400 rpm combined
Range
2 km
Muzzle velocity
1.335 m/s (APDS-T)
1.100 m/s (HEI)
Mount
Feed mechanism
Belt fed
Elevation
-14° to +127°
Traverse
360°
Operation
Crew
None on mount
Fire control
Off-mount Seaguard radar
Dimensions
Weight
3.5 t gun mount only
5.45 t full system

Application


Sea Zenith

Sea Zenith on Turkish navy MEKO 200 frigate.
Source: www.blackseanews.net - © copyright lies with original owner

List of ships equipped with Sea Zenith

Yavuz class frigate
3x Sea Zenith. Four ships in class.
Barbasros class frigate
3x Sea Zenith. Four ships in class.

Media