He tells me he inherited the boat and doesn't know what happened.
The boat seems worth considering, but I have been scratching my head trying to puzzle this out.

Go ahead and have fun, but if anyone has a sensible idea about what might have led to this, it would be REALLY appreciated.
I reckon it's an attempt to get at hull damage. I've imagined that the dark lines on the inside of the hull are cracks, and the light spots are grinding/repairs?
It doesn't completely add up, since there are cracks in the liner which appear outside the sawn areas, as if something fell against the liner.
But I think those might be from trying to pull things more open?
Anyway, worst case I reckon she fell over or hit a dock.
It doesn't seem like the end of the world, but it's impossible to ignore and worth getting a second opinion?