Title
Depth sounding machine
Caption
depth sounding machine developed in 1802 by Edward Massey; On striking the sea floor; the rotor would lock. Massey’s sounding machine could then be hauled in and the depth could be read off the dials in fathoms. By 1811; the Royal Navy had purchased 1; 750 of these devices: one for every ship in commission during the Napoleonic Wars. Depth sounding refers to the act of measuring depth.
Date
1802
Credit line
Photo12/Ann Ronan Picture Library
Reference
ARP17A26_180
License type
Rights managed
Available size
60,0Mb (1,8Mb) / 13,6in x 17,1in / 4084 x 5135 (300dpi)