"read through", as in putting down a vinyl tile floor on a slab that wasn't fully scraped clean, and now you can see a "read through" through the vinyl floor from the roughness below.
In this case, it looks like a glue joint that had been smoothed out. It looks like a factory job to me, but it could have been a repair. If it's a repair, someone did some mighty nice work.
If you have over-flexed the hull, chances are the fiberglass structure is plenty strong, but that brittle gelcoat just cracked. Same thing goes with fiberglass cars. You tap the nose on one, the hood stays strong, but you get spider cracks in the gelcoat. The only way to get rid of them in a fiberglass car is to grind them out and fill them with epoxy or polyester, and sand back smooth. If you fill yours with gelcoat, you'll need to use a 600 or 1000-grit (wet) sandpaper to lather it up with a wood block underneath, to avoid making this look like a blemish.
Regards,
Paul
|