**OVERVIEW:** The SSBN 726 *Ohio* is a ballistic missile submarine of the *Ohio*-class, operated by the United States Navy. Commissioned in 2005 (post-conversion to a SSBN), it represents a key element of the United States' strategic nuclear deterrent.

**DETAILS:**
The *Ohio*-class submarines were initially conceived during the Cold War as a means to ensure a survivable second-strike nuclear capability against the Soviet Union. The design emphasized stealth, endurance, and the capacity to carry a large payload of submarine-launched ballistic missiles (SLBMs). The *Ohio*, like other members of its class, was originally commissioned as a SSBN carrying the Trident II D5 missile. As part of the US Navy's SSGN conversion program, a number of Ohio-class submarines were converted to carry conventionally armed Tomahawk cruise missiles. However, the *Ohio* reverted to its SSBN role, retaining its crucial role in the US strategic nuclear posture. The *Ohio* class represents a shift towards a modular design, allowing for easier upgrades and maintenance throughout its service life. The class's large size also allows for significant internal volume, crucial for accommodating advanced sensor systems and providing improved living conditions for the crew during long deployments.

The primary role of the *Ohio* as an SSBN is to provide a credible and survivable strategic nuclear deterrent. By remaining submerged for extended periods, the *Ohio* is difficult to detect and track, ensuring that it can launch its missiles in the event of a nuclear attack on the United States. While primarily designed for strategic deterrence, the *Ohio* also possesses a limited self-defense capability through its torpedo tubes, allowing it to engage enemy submarines or surface vessels if necessary. The *Ohio*'s advanced acoustic sensors, coupled with its quiet running characteristics, contribute significantly to its ability to detect and avoid potential threats while on patrol. Its secondary role involves gathering intelligence through its advanced sensor suite.

The *Ohio*'s effectiveness is enhanced by its sophisticated sensor suite. The AN/BQQ-5E(V)4 sonar system, incorporating the AN/BQS-13 spherical array, provides long-range detection and tracking capabilities. The AN/BQR-19 navigation sonar aids in precise navigation and obstacle avoidance. The AN/TB-29A towed array sonar extends the submarine's detection range, particularly against quiet submarines. The AN/WLY-1 acoustic intercept receiver allows the submarine to detect and classify enemy sonar emissions. The AN/BPS-15A radar provides surface search and navigation capabilities. Electronic warfare support is provided by the AN/WLR-8(V)5 and AN/WLR-10 systems. Two periscopes (optical and LLTV) provide visual observation capabilities. The submarine's primary armament consists of the Trident D5 SLBM, a highly accurate and reliable nuclear missile. The 533mm Mk68 torpedo tubes can launch Mk48 torpedoes for self-defense. The CSA Mk2 Mod 0 [Mk151] countermeasure system provides protection against incoming torpedoes. A 3-inch Signal Ejector completes the armament suite.

**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