L3Harris to supply battery monitors for US Navy submarine classes

L3Harris has won a contract from General Dynamics Electric Boat to provide battery monitoring systems for the Virginia- and Columbia-class submarine programs, extending a long partnership with the US Navy.

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L3Harris has received an order from General Dynamics Electric Boat to deliver battery monitoring equipment for two US Navy submarine classes. The systems will be installed on Virginia-class attack submarines and the future Columbia-class ballistic missile submarines, the company announced today.

The Columbia class is the US Navy's next-generation ballistic missile submarine, intended to replace the aging Ohio class. The contract adds to L3Harris's existing work on the Virginia class and continues a relationship that has spanned multiple submarine generations, including the Ohio, Los Angeles, Virginia, and now Columbia classes.

Nino DiCosmo, President of Maritime, Space & Mission Systems at L3Harris, said that the monitoring systems directly affect operational capability and crew safety. The company did not disclose the financial terms of the deal.

The award was announced on July 27, 2026.