30mm Emerlec EE-30


Mark 74


Overview


30mm Emerlec 30

Forward view of South Korean navy EE-30 gun mount.
Source: Unknown author - © Copyright lies with original owner

Origin
United States
Type
Naval gun
Entered service
1975
Status
Limited service
Development
Early 1970's - 1975
Developer
United States - Emerson Electric
Production
1975 - 1990's?
Producer
United States - Emerson Electric
Number produced
About 100 gun mounts
Designations
EX-74 (prototype)
Mark 74 (US Navy service)
EE-30
Emerlec 30mm
Notable users
South Korea
Nigeria
Greece

Description


Introduction

Late Cold War era naval anti-aircraft of American origin. Developed by Emerson Electric for the US CPIC program for the development of a new generation of coastal patrol boats. Designed for dual anti-surface and anti-aircraft use. Although the CPIC program never went beyond a single prototype for testing, the EE-30 gun mount was exported to various US allies.

Design

The EE-30 is an enclosed gun mount with a single operator. On either side of the mount a 30mm Oerlikon KCB gas operated belt fed autocannon is fitted in a mount behind the operator. Each gun is fed by a single continuous belt.

Fire control

The mount has both remote and local fire control. In remote control the guns are slaved to a radar or optronic director. The local fire control includes a reflex sight and joystick operation of the gun mount. The EE-30 can be used in an attempt to engage large subsonic anti-ship missiles such as the Soviet P-15 Termit (NATO: SS-N-2 Styx). However, it cannot be considered a close-in weapon system since the external fire control equipment was often not geared towards early detection and tracking of sea skimming or supersonic missiles.

Firepower

Firepower of the EE-30 is significant. Each 30mm KCB autocannon as a 600 rpm cyclic rate of fire. Combined rate of fire 1.200 rpm. Effective anti-aircraft range is quoted as 2.75 km. Large surface vessels can be engaged out to 6 km, with shorter effective ranges for smaller targets. A total of 985 round are available per gun. Both HEI and SAPHEI ammunition can be used. Both types have a muzzle velocity of over 1.000 m/s, allowing of accuracy even at extended ranges compared to World War 2 era autocannon.

Platforms

The EE-30 is mostly used on a variety of patrol boats and fast attack craft. Usually one or two guns mounts per vessel. South Korea also used four mounts on the early batch of Ulsan class frigates. Nigeria and Saudi Arabia employ a single mount on their minehunters.

Users

Although developed for a US Navy requirement, it was only acquired for testing. The EX-74 was officially classified as the Mark 74 gun mount. Export sales were more successful, with about or over 100 mounts produced. Notable export customers include South Korea, the first operator, Nigeria and Greece. South Korea switched to other medium caliber gun mounts, reportedly due to unsatisfactory reliability of the EE-30 gun mount.

Details


Facts 30mm EE-30
General
Origin
United States
Type
Naval dual purpose anti-aircraft gun mount
Ordnance
Type
2x 30mm Oerlikon KCB autocannon
Rate of fire
600 rpm per barrel
1.200 rpm combined
Range
2.75 km effective against air targets
10 km slant range
Muzzle velocity
1.080 m/s for HEI
1.175 m/s for SAPHEI
Barrel life
About 5.000 rounds
Mount
Feed mechanism
Single belt feed per gun
Ammunition
985 rounds per gun
Traverse
360°
Traverse rate
90°/s
Elevation
-15° to +80°
Elevation rate
80°/s
Operation
Crew
Optional single operator on gun mount
Local fire control
Reflex sight
External fire control
Mark 93 GFCS with Kollmorgen Mark 35 periscope director (on CPIC prototype)
Signaal WM 28 radar (South Korean vessels)
Also used in conjunction with Castor, Pollux, Pollux II, HR 76, WM 22 and 9LV200 radar systems
Dimensions
Weight
1.9 t empty
4.0 t with ammunition
Length
5.66 m (guns horizontal)
Width
1.77 m
Height
1.58 m
Deck penetration
4.18 m, includes ammunition, batteries

Media


Related articles


K30 Biho

South Korea's domestic self-propelled anti-aircraft gun also mounts two 30mm autocannon. Possibly selected since 30x173mm ammunition was already in the supply chain for the EE-30 used by the navy.

30mm Hispano-Suiza HS.831

The EE-30 is armed with two 30mm Oerlikon KCB autocannon.