I would think after a few trips you could tell pretty close just by looking
in the hold. You would get a pretty good feel for how full it has been in
the past and what it weighted out to at the dock.

Some winches have load gauges on them but that doesn't take trash fish
(which can be a lot) into account.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

"Dave Baker" wrote in message
...
This isn't "rec", but it is "boats.electronics".

I am wondering how the weight of a catch on a fishing trawler could be
measured while the vessel is at sea. I'm thinking that the weight of the
whole vessel might need to be taken into account as there will be
variables
such as fuel, water, etc.

Anyone know how this would be done?

Maybe rather than weighing while in the hold it would be weighed in the
net
before dumping into the hold?

Thanks,

Dave