Marine plywood
Marine Plywood is manufactured from durable face and core veneers, with few defects and each layer of veneer is bonded with a high performance resin.
The paint systems available from specialist suppliers are based on high performance epoxy and polyurethane coatings.
Due to the construction and quality of marine ply it is suitable for use in areas of high humidity when treated with the appropriate paint products.
https://www.international-marine.com/
https://www.hempel.co.uk/en-GB/marine
https://www.awlgrip.com/region-selection?destination=products