Alexander Behm sails the North Sea and bounces sound waves off its bottom, advancing a new method of depth measurement known as echo sounding. William Beebe and Otis Barton descend in a tethered ...
A missing sailor is presumed dead after Monday's North Sea crash involving a cargo ship and a tanker. Meanwhile, crew members ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback