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Idaho (SSN-799)

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Virginia Class Attack Submarine: Named Idaho (SSN-799) on 22 August 2015.
Idaho will be delivered by GDEB located in Groton, Connecticut.
SSN-792 through approximately SSN-801 are planned to make up the Fourth Block. The main improvement over the Block III is the reduction of major maintenance periods from four to three, increasing each ship's total lifetime deployments by one. (Partial text courtesy of

Specifications:Power Plant: One S9G pressurized water reactor, 29.84MW (40,000hp), one shaft with pumpjet propulsor, Improved Performance Machinery Program Phase III one secondary propulsion submerged motor. Displacement, 7,800 tons submerged. Length: 377 feet. Draft: 32 feet. Beam: 34 feet. Speed: 25+ knots submerged. Depth: Greater than 800 feet. 12 VLS & four torpedo tubes, capable of launching Mark 48 torpedoes, UGM-109 Tactical Tomahawks, Harpoon (missile)s and the new advanced mobile mine when it becomes available: Unmanned Undersea Vehicles, Special Warfare: Dry Deck Shelter. Advanced SEAL Delivery System. Sonars: Spherical active/passive arrays. Light Weight Wide Aperture Arrays. TB-16, TB-29, and future towed arrays. High-frequency chin and sail arrays. Countermeasures: 1 internal launcher (reloadable 2-barrel) 14 external launchers. Crew: 134 officers and men.

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Virginia-class1.09kNewport News Shipbuilding is teamed with General Dynamics Electric Boat to build Virginia-class submarines. Newport News Shipbuilding builds the stern, habitability & machinery spaces, torpedo room, sail and bow. Electric Boat builds the pressure hull, engine room and control room. Newport News Shipbuilding and Electric Boat each perform work on the reactor plant as well as alternate on the final assembly, test, outfit and delivery. The team has been recognized as the best shipbuilding program in the Navy.
Virginia-class Infographic PDF.
Text & photo courtesy of
Virginia-class2.06kFirst, there was Sputnik. Now there is Spudnik!
Secretary of the Navy (SECNAV) Ray Mabus announced the name of the Virginia-class attack submarine SSN-799 as Idaho, at the Western Idaho Fair on 22 August 2015.
Insert photo courtesy of
USN photo # 150822-N-LV331-002 by Mass Communication Specialist 2nd Class Armando Gonzales, courtesy of via Ron Reeves (of blessed memory).
1.08kA shipbuilder in the Machine Ship TIG welds on a torpedo tube for Idaho (SSN-799), April 2021. Photo 2-DCS21-96-6 by Ashley Cowan courtesy of
1.37kWhat looks like a tangled mess of chains to some, makes perfect sense to shipbuilders as they work together to prepare Idaho’s (SSN-798) stern for transportation to General Dynamics Electric Boat, June 2021. Photo 3DCS21-142-393 by Ashley Cowan courtesy of

There is no DANFS History currently available for Idaho (SSN-799) at the Haze Gray & Underway Web Site, the main archive for the DANFS Online Project.
Crew Contact And Reunion Information
Not applicable to this ship.
Additional Resources and Web Sites of Interest
The VIRGINIA Class America's Next Submarine
The Virginia Class—A New Submarine for the 21st Century
SSN-774 Virginia-class NSSN New Attack Submarine Centurion
Making a Submarine - General Dynamics
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