The U.S. Navy is building four new nuclear submarines to supplement its aging fleet. "Today's submarine force is the most ...

Satellite imagery spotted a Chinese submarine with its nuclear ballistic missile hatches open while pier-side at a naval base with underground facilities facing the contested South China Sea.

The young lieutenant was being groomed as the engineering officer for the nuclear plant aboard the ... The Navy's work in developing the first nuclear submarine, the USS Nautilus, meant that ...

The first three US nuclear power submarines would be transferred by early 2030s should the US meet its own production targets of 2.3 vessels per year, up from a current average of 1.2. The ...