Sippican/Gsm Submarine Antenna Joint Venture, LLC, 7 Barnabas Rd, Marion, MA 02738, US

Massa engineers and manufactures sonar and ultrasonic products for use in the ocean, air and fluids. We are the eyes and ears for naval ships and submarines that protect the U.S. coastline with our undersea technologies. Founded by the man who pioneered the field of electroacoustics more than 70 years ago, Frank Massa, the company maintains family ownership and leadership. Our products are for sale in commercial or industrial markets, and to the military. We are set apart by our ability to solve problems in various fields and environments with our electroacoustical expertise we often tailor our designs to fit customer needs when applicable. Massa is ISO 9001:2015 certified, and has been awarded over 165 U.S. Patents in sonar and ultrasonic technology.

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Lockheed Martin Corporation