About Sonobuoy TechSystems (STS)

STS is a joint venture between Sparton, an Elbit Systems of America Company and Undersea Sensor Systems, Inc. d/b/a Ultra Maritime.

Sparton and Ultra Maritime are the largest producers of sonobuoys in the world, with combined deliveries of over 16 million sonobuoys worldwide. STS is your only source for US specification qualified sonobuoys.

STS leverages the successful design and manufacturing expertise of these companies to offer customers a complete line of products.