"You'd almost have open something up and get into it deeper to verify the construction detail."
This disheartening process will be essential, if you are to find the sources of all the leaks
, and make the boat sound. Can be a huge project
Good luck with it. You're gonna need it!
Sorry for sounding down, but to make the boat safe for long distance voyaging is going to be a real challenge.
Like I just said, good luck.