Latest News About Los Angeles-Class Submarine

Here’s the latest I can provide based on current public reporting up to 2026.

Direct answer

• Recent reports in 2025–2026 indicate that the U.S. Navy completed the first Los Angeles-class submarine Service Life Extension Program (SLEP) overhaul on USS Cheyenne (SSN 773) in late 2025, extending its service life and upgrading key systems; later in 2026, there were reports of deactivations and ongoing reviews of other Los Angeles-class boats, including Boise (SSN 764), as part of fleet renewal decisions. These developments reflect a shift in sustaining and modernizing the class amid broader undersea force structure changes.[2][3]

Context and key points

• SLEP for Los Angeles-class submarines focuses on reactor refueling, propulsion core renewal, and upgrades to combat systems, sensors, and habitability to maintain readiness into the 2030s and beyond. The Cheyenne overhaul is highlighted as a benchmark for future Los Angeles-class work, with potential follow-on boats identified as candidates for similar overhauls.[2]
• The Boise deactivation in April 2026 underscores the Navy’s ongoing assessment of asset availability versus budget and maintenance constraints, signaling a broader shift toward newer platforms while managing the remaining Los Angeles-class fleet.[3]
• Public sources also note the longer-term plan to transition to newer attack submarines (e.g., upcoming Virginia-class/next-generation platforms) as part of fleet modernization, while leveraging SLEP opportunities where feasible.[4]

What this means for Los Angeles-class boats

• Some boats may receive SLEP work to extend their life, but not all will be selected due to cost, condition, and strategic priorities. Expect a mix of renewed, decommissioned, and transitioning assets in the coming years.[3][2]
• The class remains important for sustaining undersea warfare capabilities in the near term, even as the Navy invests in newer platforms and modernization programs.[4]

Illustrative note

• If you’re tracking specific submarines or dates, I can compile a brief timeline of SLEP milestones and deactivations as they’re publicly confirmed.[2][3]

Citations

• Details on USS Cheyenne’s SLEP completion and life-extension outcomes.[2]
• Reports on USS Boise deactivation and related fleet decisions.[3]
• Context on broader Los Angeles-class status and Navy modernization considerations.[4]