NOAA Photo Library Banner
Takes you to the Top Page Takes you to the About this Site page. Takes you to the Contacts page. Takes you to the HELP page. Takes you to the Credits page. Takes you to the Collections page. Takes you to the search page. Takes you to the Links page.

NOAA Photo Library Image - ship4269

Figure 61. Electrosounder, used by the Italian Navy in 1954, employed a small explosive device which exploded on impact with the bottom and the sound subsequently was heard at a hydrophone on a ship. The use of explosives for depth finding was first suggested by a French engineer, Urbain Dortet de Tessan about 1850.

Image ID: ship4269, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco

Category: Oceanography/Historical instruments/

High Resolution Photo Available

Publication of the U.S. Department of Commerce, National Oceanic & Atmospheric Adminstration (NOAA),
NOAA Central Library
NOAA Privacy Policy | NOAA Disclaimer
Last Updated:
November 10, 2017