It would be worth knowing. I'm sure that some of your manufacturers have records that go back far enough, so that we'd know what they were actually using for materials.
Let's fast-forward to the present and talk about the materials that are going into boats now. What design attributes will there be to ensure that if it's wrecked, it's not going to contaminate that area with debris, particularly styrofoam, which tends to pop up and get really ugly along the beaches. Of course, it's not very good for the marine life either.
Do the more modern ingredients going into pleasure craft give us a sense that things are going to be better protected, even if the worst happens?