Bridle Angle and Wing End Spread calculations

Alternative names

  • Sweep Angle
  • Bridle angle
  • Calculations
  • Gear spread
  • Wing end spread
  • Door spread

Knowing the Bridle or Sweep Angle and the Wing End Spread of the gear will help the skipper better understand the efficiency of their trawl gear. It is important for any trawl skipper to know what these parameters are for their own gear.

An illustration demonstrating the measurements that can be calculated between the door spread, angle of the bridle and distance between the wing ends
An aerial view of a trawl

The documents below provide guidance on calculations for the bridle angle of a single trawl and wing end spread using a calculator and guidance on calculating the sweep angle and wing end spread of a single demersal trawl.