I have both in mine.(84 cuddy) It came with one inside, but I had to add the one in the splashwell for the oil tank when I repowered. A battery will fit sideways in the one in front, but oil tank was too large. I installed a Tempress hatch woth the rubber gasket. It doesn't seem to leak to much, but I have a 25 " transom.
This is looking down on the splashwell
This is a shot of both hatches
