OVERVIEW: The SSBN 734 Tennessee [Ohio Class] is a nuclear-powered ballistic missile submarine (SSBN) in service with the United States Navy. Commissioned in 2005, it represents a later production block of the Ohio-class, incorporating improvements and upgrades implemented throughout the program's lifespan.

DETAILS:
The Ohio-class submarines were conceived during the Cold War as a survivable and undetectable strategic deterrent platform, replacing the aging George Washington, Ethan Allen, and Lafayette-class SSBNs. The design emphasized stealth, endurance, and the ability to carry a large number of intercontinental ballistic missiles. The class features a single-hull construction, anechoic coating, and a rafted machinery system to minimize noise propagation, ensuring a low acoustic signature. The Tennessee, being a later variant, benefits from incremental upgrades in noise reduction technology, reactor performance, and electronic systems compared to the earlier vessels of the class. The submarine’s internal layout is optimized for extended patrols, prioritizing crew comfort and operational efficiency.

The primary role of the SSBN 734 Tennessee is to provide a secure and credible sea-based nuclear deterrent. While the Ohio-class was originally designed with a secondary anti-submarine warfare (ASW) capability, this has been de-emphasized in favor of its strategic mission. The Tennessee routinely conducts submerged patrols, remaining undetected for extended periods. The vessel is capable of operating in all ocean environments, including under ice. In addition to its strategic role, the submarine can be deployed for intelligence gathering and special operations support, although these missions are secondary to its primary deterrent function.

The SSBN 734 Tennessee is equipped with a comprehensive suite of sensors to maintain situational awareness and support its strategic mission. The AN/BQQ-5E(V)4 sonar suite, including the AN/BQS-13 spherical array, provides long-range detection and tracking capabilities. The AN/BQR-19 navigation sonar aids in precise underwater navigation. The AN/WLR-8(V)5 and AN/WLR-10 electronic support measures (ESM) systems detect and analyze enemy radar emissions. The AN/TB-29A towed array sonar enhances the submarine's passive detection range, particularly in shallow water environments. For surface navigation and targeting, the vessel is fitted with an AN/BPS-15A surface search radar. Two Generic Submarine Periscopes, one optical and the other equipped with Low Light TV (LLTV), allow for visual observation and surveillance while maintaining a low profile. The vessel is armed with Trident D5 Submarine Launched Ballistic Missiles (SLBMs) capable of delivering multiple independently targetable reentry vehicles (MIRVs), providing a devastating retaliatory strike capability. The 533mm Mk68 torpedo tubes, firing Mk48 torpedoes, provide a self-defense capability against surface and subsurface threats. The CSA Mk2 Mod 0 [Mk151] countermeasures and the 3-inch Signal Ejector provide defensive measures against torpedo attacks.

SPECIFICATION: Length: 170.0 m || Beam: 13.0 m || Draft: 10.8 m || Disp: 16765 t

SENSORS: AN/TB-29A || AN/WLY-1 || AN/BPS-15A || AN/WLR-8(V)5 || AN/WLR-10 || AN/BQR-19 || AN/BQQ-5E(V)4 [AN/BQS-13] || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

ARMAMENT: Trident D5 || 533mm Mk68 TT || CSA Mk2 Mod 0 [Mk151] || 3-inch Signal Ejector || CSA Mk2 Mod 0 [Mk151]