Oh well yes do like to push the boundaries down there. Their sense of adventure suggests to me that even if the Humber had made it across alright, they would have gone until something broke or they got stuck
What I didn't get was how the water got into the sump. Was that because the dipstick was displaced or had water flowed into the filler? Shame about the wing damage.
Again full marks to the dog for staying at its post & not panicking.