L3Harris has secured US Navy contracts to continue producing key submarine sonar systems that support long-range underwater detection through 2029.
The Naval Sea Systems Command awards cover production of the TB-29C and TB-34A towed array systems, which are deployed on US Navy submarines to improve passive sonar detection and situational awareness in contested waters.
Work under the contract ensures sustained output of these systems over the coming years as the navy maintains and modernizes its undersea fleet.
The arrays are designed to extend a submarine’s ability to detect acoustic signatures at distance, a capability that remains central to undersea operations where stealth and early warning determine tactical advantage.
L3Harris will continue manufacturing, testing, and integrating the systems across its established production facilities.
“Our sustained investment in specialized facilities and our skilled workforce ensure the submarine fleet has the capabilities needed to counter evolving threats,” L3Harris Maritime President Nino DiCosmo said.
L3Harris Boosts US Submarines
L3Harris has received multiple orders this year alone tied to US submarine and undersea warfare modernization.
In March, the US Navy requested L3Harris to provide Torpedo Tube Launch and Recovery systems, which help submarines deploy and recover autonomous underwater vehicles without surfacing.
In February, the company secured its largest full-rate production contract to date for submarine communications systems, awarded by General Dynamics Electric Boat for US Navy Virginia- and Columbia-class submarines.
The systems aim to strengthen onboard connectivity and operational awareness, incorporating upgraded technologies for secure and reliable communications during missions.
