Easy — make your own homebrew water depth logger. Thankfully, gone are the days when an able seaman would manually deploy the sounding line and call out the depth to the bottom. [Neumi]’s ...

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 ...

Cruise vessels that have been operating in Antarctica and the Arctic for decades have been accumulating large files of depth soundings. The Association of Arctic Expedition Cruise Operators (AECO ...