Generally speaking the inland waterways are about 4-5 deep in the middle depending on silting
and as little as 2 inches at the side [ usua;;y non tow path side ] but i could not pull in at all places with an 18 inch draught and semi chine sides
you can stand up in it basically but the bottom is very silty
You stand a reasonable risk of hitting your head on the bottom i would imagine but it is likely to be soft
Dont try near bridges as that is where things generally get thrown in – all sort of weird stuff
Amazing what floats – gas bottles, old style tv’s were two that always surprised me