The USS Cheyenne (SSN-773) is the final vessel of the Los Angeles-class submarines, representing a significant milestone in U.S. naval engineering. Constructed by Newport News Shipbuilding and Dry Dock Company, her keel was laid on July 6, 1992, following the award of the construction contract in November 1989. She was launched on April 16, 1995, with Mrs. Ann Simpson serving as her sponsor, and officially commissioned on September 13, 1996, under Commander Peter H. Ozimik. Measuring approximately 360 feet in length and featuring a sleek, streamlined hull typical of attack submarines, Cheyenne was designed for a variety of missions including anti-submarine warfare, strike operations, and intelligence gathering. She transferred her homeport to Pearl Harbor, Hawaii, in 1998. Notably, Cheyenne served as a trials platform for cutting-edge flat-screen, interoperable sonar displays, reflecting her role in testing advanced naval technology. Cheyenne played a prominent role in combat operations, notably launching Tomahawk cruise missiles during Operation Iraqi Freedom under Commander Charles Doty, earning the nickname "First To Strike" after successfully deploying her entire missile complement in a nine-month deployment. Her combat record cemented her reputation as a capable and pioneering vessel in modern naval warfare. Throughout her service, Cheyenne participated in various exercises, including anti-submarine warfare drills in Hawaiian waters in 2006, involving multiple nuclear submarines and land-based aircraft. In 2021, she transitioned from Pearl Harbor to Groton, Connecticut, to undergo a comprehensive Service-Life Extension Program (SLEP) at Portsmouth Naval Shipyard. This extensive overhaul, completed in late 2025, included reactor refueling, hull preservation, propulsion upgrades, and advanced sonar and combat system enhancements, notably integrating systems used on newer Virginia-class submarines. This overhaul is expected to extend Cheyenne’s operational life beyond 44 years, making her a vital component of the U.S. submarine fleet well into the future. Her modernization underscores her maritime significance as a versatile, technologically advanced attack submarine, contributing to the strategic dominance of the U.S. Navy.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.