[Paddlewise] Rigging question - Perfect Storm

This isn't really a paddling question, but is a boating question that
some of you paddlers may have the answer to.  Skip now if you're not
interested in general boating.  Apologies in advance for this off-topic
question, and please reply to me privately if you have the answers to my
questions.

In the movie "Perfect Storm," I was surprised to see the Andrea Gail
rigged with apparent trawler booms when it was fishing as a longliner. 
Yes, you can attach a longline reel/drum to any boat, but why carry the
useless (and dangerous, in this movie) trawler booms?  The trawler booms
with anchors attached played a key part in the movie when the captain
crawled out on one to cut the line to release one of the anchors.  

Is it common in New England to have boats rigged as trawlers when they're
longliners?  I would think most Glouchester boats would be rigged for
hauling lobster pots with swivel booms or for longlining.  

What do they trawl for in New England?  I would guess that the Grand
Banks cod fishery was a longline fishery, and not a trawl fishery.  True
or not?

Anchors on trawl booms?  Wouldn't they carry otter doors instead of
anchors?  

Curious to know...

Darrell Lee
Alameda, CA
snorkler_at_juno.com
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