As the Royal Navy moves to a single class of nuclear-powered attack submarines (SSN), the Astute class, the service life of the Trafalgar class is drawing to a close 41 years after HMS Trafalgar ...

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.

There are three operational classes of attack submarines in its the U.S. Navy's large submarine fleet: the Los Angeles, the Seawolf, and the Virginia classes, with the Virginia being the newest.