How It Works
This simulator models the behavior of a towed fish (towfish) based on physical principles. By adjusting the inputs, you can see real-time estimates of the towfish's depth, its horizontal distance from the boat (layback), and how it responds to changes in speed.
Shallows Clearance Logic
This is the most critical feature for operational safety. You provide the obstacle's depth and a safety margin. You must also provide the horizontal distance from the **boat's stern to the obstacle**. The total distance the towfish must travel to clear the obstacle is then calculated as `(current layback) + (distance from boat)`. The software finds the minimum safe speed required for the towfish to rise to the safe depth *before* it travels this total horizontal distance.