or U-boats, sunk, scuttled, captured, or otherwise lost to German forces during World War II. Here, naval historian Timothy Mulligan describes 25 of the most historically significant U-boats.

The Germans occupied the entire Belgian coast during World War I. Their U-boats were based farther inland in Bruges, just outside the range of British naval guns, and passed through canals that ...

Britain, however, was certain the war would be won on land. To John Fisher, head of the Royal Navy, Germany’s 28 U-boats were little more than “toys” and “playthings.” But Germany itself ...

World War II submarines usually had a distinct look, shaped more like boats than the conventional crafts. But was there a ...

The RHIB is also used by U.S. Navy sailors for visit board and search operations at sea. The 11-meter-long Naval Special Warfare Rigid Hull Inflatable Boats (11m NSW RIBs) are constructed of ...