In early February 1948, a strange and urgent morse-code SOS, three dots, three dashes and three dots again, came from a Dutch ...

In September 1914, a single German U-boat ventured into the North Sea. Lieutenant Otto Weddigen’s U-9 slipped past patrols ...

At its current production rates, China is likely to have a far more menacing submarine force than Russia in short order—though its quality is still uncertain.

The Navy's "Self Defense Test Ship," an aging, decommissioned destroyer, is vital to security, but there's no clear plan to replace it, watchdogs say.

The Abraham Lincoln Carrier Strike Group is now in the Middle East, having been redirected from its Indo-Pacific deployment ...