SSN Los Angeles Class Nuclear Submarine - Naval Technology
The United States Navy has 51 nuclear powered Los Angeles Class submarines, 16 in the Pacific Fleet and 32 in…
www.naval-technology.comHere are the latest developments on Los Angeles-class submarines sourced from recent public reporting:
-
SLEP refueling overhaul completed for USS Cheyenne (SSN-773), marking a major life-extension milestone for the class. The Navy reports the Cheyenne’s overhaul restores propulsion core and modernizes combat systems, extending total service life beyond 44 years, with potential additional Los Angeles boats identified for follow-on SLEP work if funding allows in FY2026–2027.[1]
-
The U.S. Navy deactivated USS Boise (SSN-764) after more than a decade of sustainment delays as part of a reallocation of resources toward Virginia- and Columbia-class programs. The service indicates the transition will reallocate skilled labor to higher-priority assets, with Boise’s overhaul contract continuing through 2029 at Newport News Shipbuilding, supporting workforce transitions.[2][3]
-
Context on the class: Los Angeles-class submarines are nuclear-powered fast attack submarines designed for anti-submarine warfare, land attack, and other gray-zone missions. They have historically comprised a large portion of the U.S. undersea fleet, with multiple boats undergoing overhauls or deactivations as the Navy pivots to newer classes and modernization programs.[4][7][9]
Important caveats:
- The Los Angeles class has aging platforms; several boats have already completed overhauls or have been decommissioned as part of fleet modernization, so “latest news” tends to focus on overhaul progress, deactivations, and fleet-reshaping decisions rather than new combat deployments.[3][9][2]
Illustration (example): A simple timeline of recent LA-class activity would show:
- 2025: USS Cheyenne completes SLEP refueling overhaul under the life-extension program.[1]
- 2026: USS Boise deactivated after sustainment delays, with workforce redirected to Virginia/Columbia programs.[2][3]
If you’d like, I can assemble a concise, sourced briefing with dates, boat names, and status summaries in a downloadable CSV or a visual timeline. I can also provide short excerpts or summaries from the cited reports. Would you like that?
Citations:
- Cheyenne SLEP completion and status:[1]
- Boise deactivation and rationale:[3][2]
- Class context and operations:[7][9][4]