nomadwilly wrote:
KJ,
At first I was going to say*** nawwww that's a siener but I don't see a power block on the boom
A lot of boats these days are combination boats.* They can be rigged with a powerblock and net boat for seining, rigged with a gill net for gillnetting,*stacked with crab pots for crabbing, and operate longline rigs for tuna, halibut, etc.* By being able to rig the boat for a number of different types of fishing, the same boat can be used in different fisheries year-round.
Trawling is a very specialized form of net fishing. The typical*trawl net is like a long bag of net, the mouth of which*is held open by "doors" or "otters" at each side.* The net is dragged along the bottom and chains in front of the net stir up the bottom which causes the the fish, shrimp, etc. to rise up off the bottom at which point*they then picked up by the net.* The "doors" are very large and when the net is not deployed they generally sit in mounts on each side of the stern.
There are also boats known as "beam trawlers" which deploy nets rigged to booms ut 90 degrees from one or both*sides of the boat.* Same deal in principle as the otter trawl-- the net is dragged along the bottom to scoop up whatever fish they are fishing for.
So far as I know, trawling is not a fishing method used in SE Alaska.* It is very common in bodies of water like the North Sea, Irish Sea, etc. where the bottom is pretty flat and unobstructed.
The photo is of a trawler after its net has been recovered.* Note the two large otter doors that have been*hung on either side of the transom.* The drawing is a simplified illustration of an otter trawl at work.
*
-- Edited by Marin on Tuesday 4th of January 2011 06:28:28 PM