The service-life comparison associates the Los Angeles boats worked hardest during the Cold War with earlier retirement. It uses roughly thirty to thirty-two years as a planning basis for estimating the delivery rate needed to maintain a chosen submarine force. Surface ships can receive major life-extension work, with Type 23 frigates offered as the comparison, while the pressure-hull limitation is treated as a stronger constraint on submarines. In this assessment, the successful Los Angeles class also made its replacement difficult: Seawolf sought a large advance, while Virginia followed once Cold War budgets were no longer available.
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Los Angeles service life sets the submarine building tempo
Los Angeles service lives provide a roughly thirty-year planning basis for replacement orders, with heavy use and the difficulty of extending submarine hull life treated as constraints.