anyhow some close ups first the easy one fillet in the flat the floor is 5mm- 6mm and a bit scaby the locker sides 5mm the rod 7018 ESAB 3.2mm I'm curious as to the little red clamp visible in your last photo?
It looks like a corner clamp for doing work that is at 90 degrees, but can't make it out too clearly?
anyhow yes everything must drain on a boat including the deck, otherwise it fills with water like a big bucket and finally sinks. I assume you mean the lower corners I cut some out from? there are then big sort of wash- out drains in the hull sides. Water still gets into the boat in place non the less and they are fitted with a pump in the lowest part of the hull (if it cant get out it will only fill) the risk as I have seen in last years re-build of a boat sunk in a lock is it don't take a lot to over balance a narrow-boat 1m3=ton that might be a few inches deep washed to one side?


