At the top of the naval tree sit the countries able to design, build, and operate nuclear-powered attack submarines (SSN), ...

No Good Deed Finale Recap: Cracking the Case As nice as it is to see the Morgan family make peace with one another, watching them get revenge on Margo is even better.

The U.S. Navy has a massive submarine fleet ... going back as far as 1954, with the introduction of the USS Nautilus (SSN-571), but it took some time for the older subs to age out of the fleet.

Attack submarines are designed to seek and destroy ... of the practice for its entire operational life through the rapid introduction of new systems and payloads. As part of the Virginia-class ...

Determining the country with the most submarines in its military arsenal is a bit tricky. Nations often keep their military statistics classified, so exact numbers aren't always available.

At the Wisconsin Maritime Museum in Manitowoc, you can descend a steep staircase into the USS Cobia, a US Navy submarine that sank 13 ships and earned four battle stars in World War II.

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 ...

In what seems like a remarkably obvious move, ESA is working with the Portuguese Space Agency and the Portuguese Navy to use life aboard a naval submarine to learn more about the effects of ...