The 688-class, also known as the Los Angeles-class, submarines are a series of nuclear-powered fast attack submarines (SSNs) built by the United States Navy. Introduced in the 1970s, this class was designed as a part of the Navy’s response to the growing capabilities of the Soviet submarine fleet, specifically to seek and destroy Soviet ballistic missile submarines and protect naval task forces.Key technical characteristics of the 688-class submarines include:Length and Displacement: These submarines measure approximately 362 feet in length with a beam of 33 feet and have a submerged displacement of about 7,000 tons.Propulsion: Powered by a nuclear reactor, specifically the S6G reactor designed by General Electric, providing a speed of over 25 knots and the capability for submerged operations of several months without surfacing.Armament: The 688-class is equipped with four 21-inch torpedo tubes capable of launching Mk-48 torpedoes, Harpoon anti-ship missiles, and Tomahawk cruise missiles. They have provisions for laying mines and can also support advanced naval special warfare operations.Sonar Systems: These submarines are outfitted with sophisticated sonar arrays, including a bow-mounted sphere sonar and a wide aperture lightweight fiber optic sonar array, enabling superior detection capabilities in various marine environments.Crew and Technology: Typically manned by a crew of around 130, the 688-class submarines incorporate advanced technology for navigation, communication, and combat systems to operate effectively in multi-threat environments.Throughout their service, the 688-class submarines have undergone several upgrades to enhance their combat systems, sensors, and stealth capabilities to extend their operational life and maintain relevance in modern naval warfare.