Every bridge and lock is judged against these. Pick your hire boat to fill them automatically, or set them by hand.
How much spare room before a bridge or lock turns amber. Wider margins flag more as “tight” — sensible for a big boat, wind, or a new skipper.
Spotted something out of date? Your correction is saved on this device and applied to the chart immediately. (A full deployment would share these with other skippers.)
Bridges and locks keep hours — some shut for lunch or for the night. Set when you'll cast off and Vaart checks you reach each one while it's operating.