It is important to carefully plan the setup of your sensors before adding them to the system. You can create a table with a list of frequencies and complete it when you add sensors.
You can add to Scala2 measures coming from winch control systems that use the following NMEA sentences.
Drawings to manufacture Spread Sensor pockets to be placed on trawl doors. Ask your local Marport Office for scaled templates.
You can test if the relative bearing measurements are correctly calculated by the door sensors.