Notre collection

Electronic Fish Finders

Haut de la page

Animated drawings, diagrams, and some live photography explain the fundamental principles of the operation of electronic fish-finding equipment on trawlers: how soundpulses and their returning echoes can determine the location, density and depth of fish, and the type of sea bottom below. The spin-off of research into underwater-sound, this electronic equipment has already proved its value in increasing the yield for the deep-sea fisherman.

1969, 17 min 46 s

Haut de la page