Sounding line

File:Mesure du fond avec la sonde sur une frégate-Morel Fatio-img 3163.jpg

Measuring the water depth on a frigate, illustration of 1844.

A sounding line is a way to measure the depth, usually inside a body of water. The basic concept is that of a weight attached to a long rope.

Sounding Line Media

• Olaus Magnus - On the Vast Depths of the Norwegian Coasts.jpg

  A sailor and a man on shore, both sounding the depth with a line

• Sounding leads.jpg

  A sounding pole

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  Edward Massey's sounding machine