Submarine Squadron 4
| Submarine Squadron 4 | |
|---|---|
| Active | 1930–1995 1997–present |
| Country | United States of America |
| Branch | United States Navy |
| Type | Submarine Squadron |
| Part of | Submarine Force Atlantic(COMSUBLANT) |
| Garrison/HQ | Naval Submarine Base New London |
| Equipment | Nuclear Attack Submarines |
| Commanders | |
| Current Commodore | Capt. Jason Grizzle |
Submarine Squadron 4 ( SUBRON 4, also known as CSS-4) is a US Navy unit of submarines.
Raised by the United States Navy in 1930, since 9 July 1997, the squadron has been based at the Naval Submarine Base New London, Groton, Connecticut, United States of America.