Outrigger trawlers
Outrigger trawlers use outriggers, or booms, to tow the trawl.
Otter trawlers
Otter trawlers deploy one or more parallel trawls kept apart horizontally using otter boards
Stern trawlers

Stern trawlers have trawls which are deployed and retrieved from the stern.
Freezer trawlers

The majority of trawlers operating on the high seas are freezer trawlers
