OVERVIEW: The SSBN 734 Tennessee [Ohio Class] is a ballistic missile submarine (SSBN) operated by the United States Navy.

DETAILS:
The Ohio-class SSBN represents the pinnacle of submarine-launched ballistic missile (SLBM) technology within the United States Navy. Conceived during the Cold War to ensure a survivable nuclear deterrent, the class was designed with an emphasis on stealth, endurance, and operational flexibility. The design philosophy centered around minimizing acoustic signatures to enhance survivability against increasingly sophisticated anti-submarine warfare (ASW) threats. This involved extensive use of noise-reduction techniques, including rafted machinery, anechoic coatings, and a highly optimized hull form. The program was initiated in the 1970s, and the lead ship, USS Ohio, was commissioned in 1981. Subsequent vessels have benefitted from incremental upgrades and technological improvements. The Ohio-class submarines, including the Tennessee, represent a critical component of the US nuclear triad, providing a highly reliable and difficult-to-detect launch platform for strategic nuclear weapons. The USS Tennessee, while originally commissioned in 1988, underwent a significant overhaul and modernization program, resulting in its "commissioning" in 2020, reflecting substantial upgrades to its systems and capabilities.

The primary role of the SSBN 734 Tennessee is strategic deterrence through the deployment of nuclear-armed Trident D5 ballistic missiles. This mission necessitates prolonged submerged patrols, emphasizing the importance of stealth and self-sufficiency. While primarily designed for strategic strike, the vessel retains a limited self-defense capability. The 533mm Mk68 torpedo tubes provide a means of engaging hostile surface combatants or submarines, though this remains a secondary mission compared to strategic deterrence. The 3-inch Signal Ejector allows for the deployment of countermeasures and communication devices, further enhancing survivability.

The modernization of the Tennessee in 2020 reflects an emphasis on enhancing its sensor suite and command-and-control capabilities. The installation of the AN/BQQ-10 sonar suite provides advanced sonar processing capabilities, enabling long-range detection, classification, and tracking of underwater contacts. The AN/BQR-19 navigation sonar provides precision navigation data, essential for maintaining position accuracy during extended submerged operations. The AN/BLQ-10(V)5 electronic support measures (ESM) system allows for the detection and analysis of enemy radar and communication signals, providing situational awareness and contributing to avoidance of detection. The AN/BPS-15A surface search radar provides limited surface detection capability when the submarine is at periscope depth. The AN/TB-29A towed array and AN/WLY-1 acoustic intercept system both enhance the vessel's passive detection and identification capabilities. The inclusion of both Optical and LLTV periscopes allow for visual surface surveillance and targeting under varying light conditions. The CSA Mk2 Mod 0 [Mk151] Chaff and Decoy Launching System (CDLS) provides a soft-kill defense against incoming torpedoes and missiles. The Trident D5 SLBM represents the submarine's primary offensive weapon.

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

SENSORS: AN/TB-29A || AN/WLY-1 || AN/BQQ-10 || AN/BPS-15A || AN/BQR-19 || AN/BLQ-10(V)5 || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

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