Yes, that is correct. Again:

19-foot Shearwater Atlantic

One layer 4 oz top and bottom, one layer 6 oz bottom only up to deck/hull joint.

Outer layers only, i.e. not the 'glass on the inside of the kayak

Very poor layup- mixed the 'glass too much at one time and it set up fast and therefore I didn't squeegee it very good.

Not a scientific scale- just weighed on a scale designed for small weights, but it was not calibrated with a test weight prior to weighing or anything like that. It was a quality scale in the $100 range, so if it's off it's likely not by much. This was more of a curiosity than a scientific test. I did weigh every strip of 'glass and ensured nothing like old bits of silicone or pieces of wood or anything were stuck to it before weighing. The glass was badly UV damaged so it just peeled off the kayak in big strips so this was very easy to do.

'Glass was on the boat for around five years before removal- this wasn't fresh 'glass. I doubt that would make a difference since fiberglass doesn't dry through evaporation, but just including in case it matters to anyone.

If you want a "true" weight I can get one using a high-dollar calibrated scale. Just let me know within a week before I throw out all the remains.