Latest News About Los Angeles-Class Submarine

Here are the latest(U.S. Navy and defense press reporting) developments on the Los Angeles-class submarines as of April 2026:

• The U.S. Navy has been actively refueling and modernizing several Los Angeles-class boats under the Service Life Extension Program (SLEP), extending their service life and updating critical systems. One notable example is USS Cheyenne (SSN 773), which completed a major SLEP overhaul in late 2025, including reactor refueling and upgrades to combat and sensor suites. This demonstrates a broader plan to keep a portion of the Los Angeles fleet viable into the 2030s and beyond, aligning with fleet readiness needs.[1][2]

• The Navy has identified additional Los Angeles-class hulls as candidates for SLEP, contingent on budget and workload at shipyards. Estimates suggest several boats could be brought into overhaul programs if funding is approved, indicating continued reliance on this class for undersea capability alongside newer submarines.[2]

• In April 2026, reporting indicated a strategic shift: the U.S. Navy deactivated USS Boise (SSN 764), a Los Angeles-class submarine, after extended sustainment delays. The decision mirrors budgetary and readiness considerations, reallocating resources to higher-priority programs while phasing out older boats from active service. The Boise transition underscores ongoing challenges in maintaining an aging fleet while pursuing modernization goals.[3][4]

• Public dashboards and defense outlets note that the Los Angeles class remains a historically significant force, with dozens of hulls built between the late 1970s and mid-1990s. While newer Seawolf and Virginia-class boats dominate the current undersea buildup, Los Angeles-class boats continue to contribute through overhauls and selective retirements, depending on strategic priorities and funding trajectories.[6][9]

Illustration: A representative trajectory for Los Angeles-class support shows initial heavy deployment during the late Cold War, followed by mid-life SLEP refits for several hulls (restoring propulsion and upgrading combat systems), and selective deactivations as the fleet transitions to newer classes. This pattern reflects the Navy’s balancing act between extending life of older hulls and investing in newer capability.[2][3]

Citations:

• Los Angeles-class SLEP and USS Cheyenne modernization details.[1][2]
• USS Boise deactivation and fleet reallocation context.[4][3]
• General status and historical context of the class.[9][6]