Marine grade plywood
I made new hatchboards for my Oday from marine grade plywood. I looked into teak veneer plywood, but it was so expensive, that I bagged that idea quickly. You can stain the plywood to look very similar to teak. I polyurethaned them without stain, and it looks just like high-gloss varnish on oak. I had to order the marine grade plywood from a local lumberyard because Home Depot doesn't carry it as a stock item, and they also didn't want to special order it. Check around for the best price, as I found there was a significant variation in price from place to place. I also considered using this polyethelyne stuff called "Starboard." It is a plastic building material that comes in sheets that you can cut and work like wood. You can find it in the West Marine catalog and I bet lots of others. I suppose that hatchboards made of it would last forever and never need maintenance. I decided to go with the wood because I didn't think plastic hatchboards would look as neat. I must admit that everytime I look at my wood boards and they need refinishing, I second-guess that decision.