Sorry for a short drift here..... Hope you don't mind.
Oh i thought you were asking about a Trawler.

In this case the aft rigging would be called a Gantry with a net reel. Then Mast and boom and the outriggers P&S. Oh and the house top.
Ahhh,... Net reel is correct,.. (At least on the east coast) it is a "gallows", not a "gantry".
And the picture is most likely of a "dragger", a western rigged dragger to be correct. Though the difference between a trawler and a dragger really is the gear being towed. A trawler is towing lighter weight mid water gear, and a dragger is towing heavier bottom gear. Different gear to catch different fish.
Thank you,.... Back to to topic.