General Dynamics Electric Boat, the Groton, Conn.-based U.S. Navy submarine manufacturer, won a $32.9 million Navy contract modification for three backup photonics masts for Virginia-class fast-attack submarines.The Virginia-class submarine uses photonics masts instead of traditional periscopes.
Photonics masts do not penetrate the submarine's hull, and do not extend physically into the vessel's control room.
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