Leadline

Approximately 60% of inshore hydrography was acquired by leadline (pre-1940) sounding technology.

To attach the bridles, start measuring from the point on the gavel 16 metres from the floatline wheree you have seized the end of the leadline.

The hold was empty, without a net, corkline, leadline or buoy to be found.

Generally, there will be equal selvedges to the floatline and leadline.