A sign for Lockheed Martin Corp. stands outside the company's headquarters in Bethesda, Maryland, U.S., on Friday, Nov. 16, 2012. (Andrew Harrer/Bloomberg via Getty Images)

WASHINGTON — Lockheed Martin is acquiring Ultra Maritime as part of a $3.45 billion deal, the companies announced today.

Ultra Maritime develops a host of undersea and anti-submarine warfare (ASW) capabilities, including sonar technologies, sonobuoys, torpedo defense systems, radar solutions, and autonomous maritime sensing platforms.

“Undersea superiority belongs to those who move fastest and work together best,” Stephanie Hill, president of Lockheed Martin Rotary and Mission Systems, said in a statement today. “By joining forces with Ultra Maritime, we’re accelerating our commitment to deliver the most advanced undersea and anti-submarine warfare capabilities to our U.S. and allied partners across the globe.”

Lockheed Martin said that Ultra Maritime will fall under the company’s rotary and mission systems division upon closing.