Figure 12. Hydra sounder, made by Mr. Gibbs and colleagues on the HMS HYDRAduring the 1868 Indian Ocean expedition commanded by Captain Peter F. Shortland. Some of the first deep soundings in the South Atlantic and Indian Oceans weremade with this i
4/4/2019 2:12:18 PM
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco
Subject: Oceanography
Subject: Historical instruments