US-based Sparton Corporation and Ultra Electronics - USSI, a subsidiary of Ultra Electronics Holdings plc (ULE) announce the award of subcontracts valued at $10.8 million to their ERAPSCO joint venture, for the manufacture of sonobuoys for the United States Navy. The Q53F and Q125 sonobuoys are used to support the United States Naval Antisubmarine Forces. The primary purpose of a sonobuoy is to detect acoustic emissions or reflections from potentially hostile submarines and transmit these signals to US Navy airborne antisubmarine warfare forces. ERAPSCO was awarded a contract for the AN/SSQ-53F, a passive acoustic sensor used for detection…