Officially it's a 17 footer but it's a few inches longer bow to stern. It's pretty thin okoume ply stitched and glued with epoxy with fiberglass over the whole thing outside and some areas inside. Finished weight will be between 45 and 50 pounds. I made some parts heavier than the plans while others are a bit slimmer. Advertised finished weight is 47 I think. That's generally significantly lighter than a 17 foot plastic boat and maybe a tad heavier than a similar fiberglass/kevlar boat. I can easily lift it onto my roof rack and I'm not a big guy (5'10'' and 154lbs)
http://www.clcboats.com/...t-sea-kayak-kit.html
http://www.clcboats.com/...t-sea-kayak-kit.html