Based on the pictures I've seen in the brochures section of CSC, I would say no, that's not it. I believe they had I/O's, but yours doesn't seem to be an I/O, nor the rear seat either. Further, the lines of the deck where it approaches the upper edge of the hull seem uncharacteristic of other seacrafts.
Of course I could be wrong- it happens "occasionally."
Besides, check this out from Carla's "Moesly SeaCraft"
http://moeslyseacraft.com/SC15Brochure.aspx