Boatbuilding Plywood - Okoume

Here is a 3' square of Okoume plywood. It is a sample from 4' x 8' panels that I purchased at Harbor Sales in Maryland. I drove down to pick up 4 sheets. Each sheet was $50. I put this square to the boil and freeze test like I did with the cheap Meranti plywood from Home Depot. The okoume survived 3 cycles of boiling for 20 minutes, then freezing solid overnight. It remained perfectly flat with no signs of delamination. It would have survived more cycles too. I am glad that I decided to use it. It was more expensive, but well worth it.