Yes, we do have RoT-indicators on inland ships, most of them have. We need them for the Auto-pilot.
We also have GPS, and there are computer-charts available as well who can co-operate with the GPS. I don't have those charts yet, but in the near future i will.
The max valeu for RoT? To be honest, i never really look at it. But if i go arround, it hits 90 degrees per minute easy, even without bowthruster. But my ship turns very easy, thanks to the Hitzler 3-rudder-system.
The inland-ships in SS06 turn WAY to slow, and thats WAY to bad.
Here's a part of my wheelhouse, without a wheel, that is.
We have rebuilded it this year, so thats why some stuff isn't in place yet on the pic. The green device with the 2 gauges is my auto-pilot, with RoT- and rudder-indicator. That green thing with the stick is my helm-stick.