For some reason despite not owning one I have alot of interaction with Canal Boaters.

They are always interested in information about places and services along canals and I was trying to think of the best way of explaining how the contribute and use Openstreetmap

Of course contributing is easy - I just recommend mapcomplete.org, everydoor app, and street complete (less so as its road related)

And then I recommend an App like OSMAnd to use Openstreetmap - But for Canal Boaters specifically - Is there any way they could use layers or searches, any tips, tricks or Apps specifically get information that would be useful for them or be useful if in a canal boat?