Posted by Mike Field on September 05, 2008 at 08:25:29 user mikefield.
In Reply to: Re: PD, ML and GN (was Great Northern? Real!) posted by Mike Dennis on September 04, 2008 at 06:50:00:
Yep. To swing the lead is to do just as you say. To heave the lead is to take depth soundings, using a lead-line like this.