L3Harris to provide U.S. Navy and Australia with electro-optics sensors fire control for warship deck guns

Sept. 28, 2022
The EOSS electro-optics system is a check sight and targeting sensor for anti-surface and anti-air warfare and naval gun fire support missions.

WASHINGTON – Military electro-optics experts at L3Harris Technologies Inc. will provide shipboard sights for the fire control necessary for U.S. Navy surface warships to hit enemy ships and aircraft with naval gun fire under terms of an $8.9 million order announced Thursday.

Officials of the Naval Sea Systems Command in Washington are asking the L3Harris KEO segment in Northampton, Mass., to produce additional MK 20 electro-optical sensor systems (EOSS), radar cross section kits, installation and checkout, and on-board repair parts kits, and depot spares.

The EOSS electro-optics system is a check sight and targeting sensor for anti-surface and anti-air warfare and naval gun fire support missions, Navy officials say. The order is for the U.S. Navy and government of Australia.

Related: Lockheed Martin to provide more electro-optical fire-control systems for Army AH-64 attack helicopters

The MK 20 EOSS sensors are a major components of the MK 34 5-inch guns aboard Navy Arleigh Burke-class destroyers and Ticonderoga-class cruisers, as well as aboard the U.S. Coast Guard Offshore Patrol Cutter, for use against enemy ships, boats, and aircraft.

L3Harris KEO has been building the EOSS since 2005. That year the company won a Navy contract to provide the EOSS for the Ticonderoga-class Cruiser Modernization Program. Company electro-optical engineers built on the MK 46 Optical Sight System to blend new technologies into the MK 20 shipboard MOD 0 EOSS, as well as integrate the system into the MK 34 5-inch deck guns.

The MK 20 EOSS has digital stabilization with fiber-optic gyros, a separate eye-safe laser rangefinder with diode-pumped laser, enhanced built-in test, and improved sensor-to-sensor boresight alignment. The EOSS meets MIL-S-901D heavyweight and large-displacement shock tests.

Related: Lockheed Martin to build components for electro-optics infrared search and track sensors on Navy combat jets

The MK 20 MOD 0 incorporates several technology improvements over the MK 46, and new features that support integration with the MK 34 Gun Weapons System (GWS).

To integrate with the MK 34 deck gun, the EOSS has a new interface electronics unit (IEU) that interfaces with as many as two deck gun computers and three deck gun consoles to provide video, target bearing and range, and system status data to all three, while taking commands from any one, L3Harris officials say.

On this contract modification L3Harris will do the work in Northampton, Mass., and should be finished by March 2026. For more information contact L3Harris KEO online at www.l3harris.com/all-capabilities/naval-platform-imaging, or Naval Sea Systems Command at www.navsea.navy.mil.

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