I weighed 2 sheets on a bathroom scale and "Multiply" weighed 20 pounds for the pair.
The boat I used it on is called Cheap Canoe. Mine is 14ft.x 28x 11.5 ". The total weight is 45 lb. Could have built it lighter but I had some scrap maple flooring I cut up for the wales and breasthooks.
Here's a picture; http://hometown.aol.com/cfronzek/boatpix1.html
There are so many scarfs in this thing the inside looks like a patchwork quilt.
I'll look around for some Luna.
Charlie

: The local flooring supply house has a similar sheet good--1/4" thick,
: birch 5-ply "Luna" subfloor in 4x5 sheets. It's pretty heavy,
: but makes great bulkheads and cheekplates. I have it as an aft bulkhead in
: my Guillemot, and will use it to bulkhead two more boats this weekend.

: What did your complete boat weigh?