Profile
- Type
- Guided-missile submarine
- Conflict side
- United States
- Origin
- United States
- Service note
- 2000s-present
Artillery
Ohio-class guided-missile submarine
The Ohio-class guided-missile submarine is the U.S. Navy's converted SSGN platform for large Tomahawk strike loads and special-operations support. In the United States-Iran Conflict, DoD said a U.S. submarine launched more than two dozen Tomahawk missiles at Esfahan during Operation Midnight Hammer, demonstrating the class's long-range maritime strike role.
- Conflict side
- United States
- Built in
- United States
Service History
- In service
- Four Ohio-class SSBNs were converted into guided-missile submarines and returned to the fleet between 2006 and 2007.
- Used by
- United States Navy
- Wars
- United States-Iran Conflict
Production History
- Designer
- General Dynamics Electric Boat Division
- Designed
- Ohio-class SSBN conversion program began in the 2000s
- Built in
- United States
- Number built
- 4
- Variants
- USS Ohio (SSGN 726), USS Michigan (SSGN 727), USS Florida (SSGN 728), USS Georgia (SSGN 729)
Specifications
- Length
- 560 ft (170.69 m)
- Beam
- 42 ft (12.8 m)
- Displacement
- 16,764 tons surfaced; 18,750 tons submerged
- Speed
- 20+ knots
- Crew
- Two alternating crews of 15 officers and 144 enlisted
- Armament
- Up to 154 Tomahawk missiles, Mk48 torpedoes, and 4 torpedo tubes
- Propulsion
- One nuclear reactor, one shaft
Conflict Usage
- United States-Iran Conflict
- Side: United StatesRole: Submarine-launched Tomahawk strike platform
Used by the United States in the United States-Iran Conflict when a U.S. submarine launched more than two dozen Tomahawk land attack cruise missiles at Esfahan during Operation Midnight Hammer.
Ohio-class guided-missile submarine Images
Related Weapon Systems
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Guided Missile Submarines - SSGNPublisher: U.S. Navy | Note: Supports Ohio-class guided-missile submarine background, builder, conversion history, and general characteristics including displacement, crew, speed, and armament. | Accessed: 2026-06-20Operation Midnight Hammer press conference transcriptPublisher: U.S. Department of War | Note: Supports the United States-Iran Conflict: used by a U.S. submarine when it launched more than two dozen Tomahawk land attack cruise missiles at Esfahan during Operation Midnight Hammer. | Accessed: 2026-06-20Here's the role an Ohio-class submarine played in the strikes on IranPublisher: Defense News | Note: Supports the United States-Iran Conflict: fielded by the United States as an Ohio-class guided-missile submarine that launched Tomahawk land attack cruise missiles into Iran during Operation Midnight Hammer. | Accessed: 2026-06-20USS Ohio (SSGN 726).jpgPublisher: Wikimedia Commons | Note: Supports the primary image provenance and public-domain status for the Ohio-class guided-missile submarine image. | Accessed: 2026-06-20US Navy 100928-N-9204B-001 USS Michigan at Yokosuka.jpgPublisher: Wikimedia Commons | Note: Supports gallery image provenance and public-domain status for the USS Michigan Ohio-class guided-missile submarine image. | Accessed: 2026-06-20The Ohio-class guided-missile submarine USS Florida (SSGN 728) (5841091).jpgPublisher: Wikimedia Commons | Note: Supports gallery image provenance and public-domain status for the USS Florida Ohio-class guided-missile submarine image. | Accessed: 2026-06-20US Navy 090822-N-2911P-005 USS Georgia submerging.jpgPublisher: Wikimedia Commons | Note: Supports gallery image provenance and public-domain status for the USS Georgia Ohio-class guided-missile submarine image. | Accessed: 2026-06-20