J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Through-hulls: Potted or Sealed?

In pulling a through-hull that was suspected to be NOT potted and to pass through exposed core, it was found that the through-hull was indeed potted in glass and resin and was isolated from the core.

Did TPI seal or pot all the trhough-hulls when the boats were built? Other than the exhaust, do any pass directly through core? If so, which ones? Thanks for the help.