No, but there are marine grade plywood with mahogony veneers.....but for the price I'd hate to waste it on a transom. But as far as would it be okay.....sure as long as it's marine grade.
yes it does have the glue like CDX, but it is quite expensive here in Guam and it is heavy, but very flat and no voids. I've seen some use it on floors but don't know anyone that used it on the transom.