Marine BS1088 or similar standard ply will get you better quality
plywood with no voids between the plys. Marine ply, Okuome specifically,
is lighter than what you can get at the Home Depot. So if you're
building a small boat like a canoe where weight is a concern, it's a
nice option to go with.

--
Matt Langenfeld
JEM Watercraft
http://www.jemwatercraft.com/

Mike wrote:
Can you use any kind of plywood for boatbuilding ort does it have to be
marine ply? Surely if you are planning on glassing and painting a plywood
hull it wouldn't really matter?