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

On #337, I can confirm that the part of the hull where the transducers and toilet water intake through-hull are mounted is solid glass, presumably from the factory. I can see the inside of the hull get thinner around that whole area due to the lack of core.

I haven't examined the cooling water intake or overboard waste discharge, so I don't know about these.