Hi @julesh, There is no screen, but rather a diagram that shows you the local coordinate system axes drawn on the box. The waterlinked system is rated to 100m depth and accounts for the depth and temperature of the water at the locator. I am not more familiar with the operating principles than that. We can ask @Torgeir for any other details.
We will show both the boat position and ROV position and headings on the map in QGC so you will see the relative location of the vehicles.