So I am asking if you could let me know the type of wood and the side that I buy.
Hi there Nigel, my deck is just a piece of old scrap plywood that I had lying around, can't even remember where I picked it up!
Anyway, it is 3mm thickness, measured about 900 x 300mm before trimming to fit. The ply is certainly not marine grade! - more like the kind builders use for stud walls. If I were just starting again I would probably go for birch faced ply.
Whatever you use, be sure to give it a few coats of sanding sealer, sanding down between coats.
You may also want to check out RadioJoe's build here :
https://www.modelboatmayhem.co.uk/forum/index.php/topic,64796.0.htmlYou will find others as you browse around.
Oh, and welcome to the crazy world of model boat mayhem
Regards,
Ray.