**SSBN 726 OHIO**

OVERVIEW: The SSBN 726 *Ohio* is an *Ohio*-class nuclear-powered ballistic missile submarine (SSBN) operated by the United States Navy. Commissioned in 1988, it represents a cornerstone of the U.S. strategic nuclear deterrent force.

DETAILS: The *Ohio*-class submarines were conceived in the late 1960s and early 1970s to replace the aging *George Washington*, *Ethan Allen*, and *Lafayette* classes. Their design prioritizes stealth, endurance, and survivability to ensure the reliable delivery of nuclear deterrent strikes. The large size of the *Ohio* class was dictated primarily by the requirement to accommodate the then-new Trident I (C4) ballistic missiles, which offered significantly improved range and accuracy compared to their predecessors. The submarines were designed with a single-hull configuration for enhanced hydrodynamic efficiency and reduced underwater noise signature. The *Ohio*'s internal layout provides ample space for crew comfort and long-duration patrols, typically lasting 70 or more days.

The primary role of the *Ohio* class is to provide a secure and survivable platform for launching intercontinental ballistic missiles (ICBMs) as part of the U.S. nuclear triad. While primarily designed for strategic deterrence, the *Ohio* class submarines possess a limited anti-submarine warfare (ASW) capability for self-defense. Their advanced sonar systems, including the AN/BQQ-6, allow for long-range detection and tracking of potential underwater threats. The four 533mm Mk68 torpedo tubes provide a means of engaging hostile submarines or surface combatants, employing Mk48 or similar heavyweight torpedoes. However, their primary focus is maintaining strategic alert rather than actively seeking out enemy vessels.

The *Ohio*'s sensor suite is comprehensive, reflecting the class's strategic importance. The AN/BQQ-6 integrated sonar system provides a broad range of capabilities, including active and passive detection, classification, and tracking of underwater targets. The AN/BQR-15A and AN/BQR-19 towed arrays extend the submarine's passive listening range, enhancing its ability to detect distant acoustic signatures. The AN/BPS-15A surface search radar aids in navigation and situational awareness when operating at periscope depth. Electronic warfare support is provided by the AN/WLR-8(V)5 and AN/WLR-17 systems, enabling the detection and identification of enemy radar and communications signals. Two periscopes, one fitted with Low Light Television (LLTV), allow for visual confirmation of contacts and navigation in shallow waters. The CSA Mk1 FED [Mk139] provides a countermeasure against incoming torpedoes.

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

SENSORS: AN/BPS-15A || AN/WLR-8(V)5 || AN/BQQ-6 || AN/WLR-10 || AN/BQR-19 || AN/BQR-15A || AN/WLR-17 || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

ARMAMENT: Trident C4 || 533mm Mk68 TT || 533mm Mk68 TT || 3-inch Signal Ejector || CSA Mk1 FED [Mk139]