Commander Submarine Squadron 12
The official website of Commander, Submarine Squadron Twelve (CSS 12)
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Mailing Address

Submarine Squadron 12
Box 70, Building 87
Naval Submarine Base New London
Groton, CT 06349-5200

CSS 12 Logo



The mission of COMSUBRON Twelve is to provide attack submarines that are ready, willing, and able to meet the unique challenges of undersea combat and deployed operations in unforgiving environments across the globe.



Commodore – Capt. Matthew R. Boland
Deputy for Operations – Cmdr. Michael Poplawski
Deputy for Readiness – Cmdr. Nate Reed
Deputy for Training – Cmdr. Rusty Jones
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