Navy to buy an additional 16 Universal Modular Mast Systems from L-3 KEO in $15 million contract

April 7, 2014
WASHINGTON, 7 April 2014. U.S. Navy undersea warfare experts needed non-penetrating sensor masts for the fleet of Virginia-class fast-attack submarines. They found their solution from L-3 KEO (formerly Kollmorgen Electro-Optical) in Northampton, Mass.
WASHINGTON, 7 April 2014. U.S. Navy undersea warfare experts needed non-penetrating sensor masts for the fleet of Virginia-class fast-attack submarines. They found their solution from L-3 KEO (formerly Kollmorgen Electro-Optical) in Northampton, Mass.

Officials of the Naval Sea Systems Command in Washington on Friday announced a $15 million contract to L-3 KEO to provide 16 Universal Modular Mast (UMM) systems for the Navy's Virginia-class submarine fleet.

The Virginia-class is one of the first submarines without a traditional optical periscope that penetrates the vessel's pressure hull and extends upward to enable commanders of submerged submarines to view the scene on the surface. L-3 Communications (NYSE:LLL) acquired Kollmorgen Electro-Optical (KEO) in early 2012.

Related: Submarine designers rely on COTS to broaden undersea warfare missions

L-3 KEO's predecessor, Kollmorgen, installed the first workable periscope aboard a U.S. submarine in 1916, and has been the Navy's primary provider of periscopes and photonics masts since then.

The UMM, built by L-3 KEO and the company's Italian subsidiary Calzoni SrL in Bologna, Italy, is a non-hull penetrating mast for Navy Virginia-class fast-attack submarines and Ohio-class guided missile submarines.

The UMM can host five different sensor configurations: the photonics mast, the multi-function mast, the integrated electronic mast, the high-data-rate-mast, and the photonics mast variant.

Related: Photonics mast, electro-optical sensor suite for attack submarines to come from Kollmorgen

The L-3 KEO UMM is standard equipment for above-water sensors on U.S. and international submarines. The guided-missile submarine is an Ohio-class ballistic missile submarine variant converted to launch cruise missiles.

The UMM is a two-stage, non-hull-penetrating, telescoping submarine mast that hoists a variety of different sensors. The Navy's Virginia-class attack subs each have a bank of eight of these sensor masts, while the Ohio-class cruise missile subs each have banks of four UMMs.

On the contract announced Friday, L-3 KEO and L-3 Calzoni will do the work in Bologna, Italy, and Northampton, Mass., and should be finished by May 2016.

Related: General Dynamics continues project to upgrade submarine electronics with COTS computers

For more information contact L-3 KEO online at www2.l-3com.com/keo, L-3 Calzoni at www.calzoni.com, or Naval Sea Systems Command at www.navsea.navy.mil.

About the Author

John Keller | Editor

John Keller is editor-in-chief of Military & Aerospace Electronics magazine, which provides extensive coverage and analysis of enabling electronic and optoelectronic technologies in military, space, and commercial aviation applications. A member of the Military & Aerospace Electronics staff since the magazine's founding in 1989, Mr. Keller took over as chief editor in 1995.

Voice your opinion!

To join the conversation, and become an exclusive member of Military Aerospace, create an account today!