Lockheed Martin has been contracted to deliver COMBATSS-21 battle management systems to the US Navy frigates for $79.5m.
The system is also in service on the Freedom-class littoral combat ship.
The US State Department has announced approval of a $124.02m foreign military sale to Qatar's Ministry of Defence.
The sale includes Mk-V fast patrol boats, training, and support services.
Raytheon has secured a $92.06m contract from the US Navy for the development of the Enterprise Air Surveillance Radar (EASR).
The new EASRs are expected to be deployed on the John F. Kennedy aircraft carrier and LHA 8 America-class amphibious assault ship.
The US Naval Sea Systems Command has awarded a $52.36m modernisation contract to Newport News Shipbuilding.
Under the contract, the company will perform upgrades to the nuclear propulsion system of the USS Harry S. Truman aircraft carrier by September next year.
The US Space and Naval Warfare Systems Center Pacific (SSC Pacific) has awarded a two-year $37.09m C4ISR support contract to Tactical Engineering & Analysis.
Tactical Engineering will provide test and evaluation services for the SSC Pacific’s enterprise engineering and certification laboratory.