Applications for Thin Plywoods
Indoor Use and Outdoor Use
Using plywood for building indoor projects a good choice is pine veneers. Pine Veneer is labelled sandypine, or BC. They not to expensive and are good for all your little household projects. You can even sand, smooth and finish this plywood to get that professional look.
Uses of Plywood
Plywood for Marine Use
Marine ply is also going to have more plies than typical construction ply, you want to be on the look out for higher numbers, greater than 7 in my opinion. Marine ply is going to be lighter than ext ply and especially pressure treated ply. For your boat I would go with the Home Depot pressure treated varieties. Your best bet is to get 2 sheets of 3/4 pt ply, let them dry for a week, then glue them together.