🎣 Otter Trawl Lab: Door Spread, Towing Drag and Codend Mesh Selectivity - 2D Gear Views and Mesh Close-Up

2D side, plan and head-on mesh views of an otter trawl: door lift and warp angle set the spread, drag sets fuel, diamond or square codend meshes set the retention curve, and yield per recruit shows the mesh that sustains the catch.