All of the wood components are on a CAD file in France in the Beneteau wood shop. The entire pre-finished douka wood package was cut using CAD/CAM technology and was shipped to USA for incorporation into each build for each model. So, you could probably get a dedicated dealer to order the panel for you from Beneteau after obtaining the part number from Ward Richardson in Marion, SC. BUT...it is likely going to be cost prohibitive. A better alternative would be to fabricate your own. Make a template, including screw holes, using heavy poster board. Obtain a piece of 1/8" baltic birch plywood ( 30" x 30" from Rockler wood working. com, $14.99) and cut out & drill the panels using the poster board template as a guide. Stain with two to three applications of Min Wax oil stain , mixing 2/3 English Chestnut to 1/3 Sedonna Red for a close match. It doesn't have to be an exact match as the panels are stand alone pieces, not adjacent to other panels or cabinetry. Apply two to three coats of Min Wax Helmsman semi gloss SPRAY urethane, with ultra light sanding between coats, for a nice brush free finish & buff with Johson & Johnson paste wax. Do it yourself costs should be approximately $50.
Several years ago, I used the afore mentioned Min Wax products, available at Lowes & others, to refinish the wood companionway ladder....obtained nice results.