USS Nevada (SSBN-733)

USS Nevada (SSBN-733): A Detailed Technical Profile

USS Nevada (SSBN-733) is the fourth Ohio-class nuclear-powered ballistic missile submarine built for the United States Navy and commissioned in August 1986. Named for the Silver State, Nevada serves as a silent deterrent beneath the waves, combining stealthy operation with formidable strategic firepower. Over decades of service, she has embodied continuous at-sea deterrence through advanced nuclear propulsion, acoustic quieting, and a potent missile arsenal.

Design and Strategic Role

Ohio-Class Strategic Concept

The Ohio-class program was conceived during the late 1970s to replace aging Polaris platforms and bolster America’s sea-based leg of the nuclear triad. Key strategic goals included:

• Maximum Missile Payload: Each submarine carries up to 24 Trident II D-5 submarine-launched ballistic missiles (SLBMs) with multiple independently targetable reentry vehicles (MIRVs).
• Acoustic Stealth: Anechoic hull coatings, isolated machinery mounts, and precision hull shaping reduce radiated noise, making detection by adversary sensors exceedingly difficult.
• Extended Patrol Endurance: A single nuclear core can power continuous submerged operations for years; patrols are limited only by crew provisioning and maintenance intervals.
• Survivable Second-Strike Capability: Distributed patrol areas and stealth ensure that enough submarines remain hidden to guarantee retaliatory strike if deterrence is challenged.

Hull Form and Materials

Nevada’s smooth teardrop-shaped hull optimizes hydrodynamic efficiency and noise reduction. Special high-yield steel alloys withstand deep-submergence pressures, while modular construction techniques enabled rapid assembly in subsections. The wide beam permits internal arrangement of missile tubes, machinery spaces, and habitability zones without compromising structural integrity.

Construction and Commissioning

• Contract Awarded: 7 January 1981 to Electric Boat Division of General Dynamics, Groton, CT
• Keel Laid: 8 August 1983
• Launched: 14 September 1985; sponsored by Mrs. Carol Laxalt
• Commissioned: 16 August 1986 at Naval Submarine Base, Bangor WA under CDR F. W. Rohm (Blue Crew) and CDR W. E. Stone (Gold Crew)

During sea trials, Nevada’s reactor plant, sonar suite, fire-control systems, and ballistic-missile launch mechanisms underwent rigorous validation before her entry into operational deterrent patrols.

Technical Specifications

Dimensions and Displacement

The large displacement accommodates a 16-section missile compartment, reactor plant, sonar and fire-control suites, and extensive habitability spaces—all while preserving buoyancy and trim margins.

Propulsion and Performance

Nuclear Steam Plant

• Reactor: 1× S8G pressurized-water reactor fueled with highly enriched uranium
• Steam Turbines: 2× geared turbines producing 60,000 shp (45,000 kW)
• Auxiliary Propulsion: 1× 325 hp electric motor for silent, low-speed operations
• Drive: Single shaft with fixed-pitch propeller

Speed, Endurance, and Depth

• Maximum Submerged Speed: >25 knots (46 km/h)
• Test Depth: >800 ft (240 m)
• Endurance: Reactor core life up to 20 years; patrol lengths limited by food and consumables (~77 days average)

Nevada’s nuclear-steam plant delivers both sprint capability for tactical maneuvering and whisper-quiet slow-speed profiles vital for covert positioning.

Armament and Payload

Ballistic Missiles

• Trident II D-5 SLBMs: 24 tubes in a vertical launch configuration
• MIRV Capability: Up to eight reentry vehicles per missile, each with independently targetable warheads

Self-Defense Weapons

• Torpedo Tubes: 4× 533 mm bow tubes
• Torpedo Types: Mk 48 ADCAP heavyweight torpedoes for anti-submarine and anti-surface engagements
• Decoy Launchers: Multiple countermeasure launchers to deploy acoustic and radar decoys

Missile launches are executed via a cold launch system using high-pressure steam ejection, ensuring safe separation of the missile from the launch tube before motor ignition.

Sensors, Navigation, and Electronic Warfare

Sonar Suite

• Hull-Mounted Sonar: AN/BQQ-5 active/passive array for medium-range search
• Towed Array: AN/BQQ-10 passive flank array delivers long-range detection of quiet targets

Combat Control and Navigation

• Fire-Control System: Mk 98 digital computing system integrates sonar data and targeting solutions
• Navigation: Inertial navigation system augmented by GPS fixes at periscope depth
• Electronic Support Measures (ESM): Sensors detect and classify adversary radar and communication emissions

Extensive acoustic treatments, machinery isolation, and precision flow-noise management enable Nevada to operate at noise levels rivaling specialized attack submarines.

Crew and Habitability

Personnel Complement

• Blue Crew: 15 officers, 140 enlisted
• Gold Crew: 15 officers, 140 enlisted
• Total Surge Capacity: Up to 200 persons with embarked special-operations teams

Ohio-class submarines employ a two-crew model—addressing continuous patrol demands by rotating crews while the boat remains on deterrent station.

Living Spaces and Amenities

• Berthing: Rotational “hot bunking” supports 24-hour operations in limited space
• Mess and Galley: Full-service kitchen preparing meals for extended deployments
• Recreation: Satellite TV, library, and exercise equipment to maintain morale and health
• Medical Facilities: Compact sickbay capable of handling routine and emergency care

Automation and system redundancies reduce watchstanding requirements, modestly expanding habitability in a vessel primarily designed for strategic missions.

Operational History

Strategic Deterrent Patrols

Since entering service, Nevada has conducted dozens of deterrent patrols in both the Atlantic and Pacific theaters. These undersea patrols rotate between ballistic-missile support facilities in Kings Bay GA and Bangor WA, providing continuous at-sea presence.

Missile Test Launches

Nevada has executed multiple demonstration and verification launches of the Trident II D-5 missile from a submerged position, validating weapon system reliability and crew proficiency.

Awards and Recognitions

• Battle “E” Efficiency Award: Earned by both Blue and Gold crews for sustained excellence in readiness and operations
• Omaha Trophy: Recognizing superior performance in strategic deterrence
• Navy Unit Commendations: For exceptional service during specialized missions and exercises

Her crews have maintained an exemplary safety record with zero reactor incidents and no missile launch failures.

Modernization and Life-Extension

Engineering Refueling Overhaul (ERO)

Completed in 2008 at Puget Sound Naval Shipyard, the ERO replaced Nevada’s reactor core, upgraded propulsion auxiliaries, refurbished habitability spaces, and applied enhanced acoustic coatings.

Combat Systems Refresh

• Weapon Fire-Control Upgrade: Improved Mk 98 hardware and software for faster targeting
• Sonar Processor Enhancement: Next-generation digital signal processors for better detection in littoral environments
• Communications Suite Modernization: High-bandwidth satellite links and secure data networks

These upgrades extend operational relevance into the 2040s and maintain parity with evolving undersea threats.

Future Outlook

With the planned introduction of the Columbia-class SSBNs beginning in the early 2030s, USS Nevada will continue strategic deterrent patrols until relieved by newer boats. A combination of engineering overhauls and combat system modernizations ensures she remains a silent sentry for decades to come.

Conclusion

USS Nevada (SSBN-733) stands as a testament to naval engineering and strategic deterrence. Her nuclear-powered endurance, acoustic stealth, and potent Trident II missile payload have secured her role at the forefront of America’s sea-based nuclear forces. Through continuous upgrades and disciplined crew rotations, Nevada will persist as a vigilant sentinel beneath the waves—embodying the unwavering principle of deterrence through assured second-strike capability.