Figure 60

Figure 60. Joe Soundings sounder. This device was described in nautical magazine in 1832 by an individual with the pen name “Joe Soundings.” It used a counter incremented by a propeller to measure the distance to the bottom. It is similar to the Massey sounder and Massey is sometimes cited as the inventor. There is no information concerning testing or use of this instrument.

Photo Category: Oceanography - Historical instruments