Today I noticed I was taking on water, while in reverse. Yeah, not too happy about that. Don't worry the boat is fine.

So the water seems to come in through the transom in two holes which are located just inside of the trim pumps on either side of the transom wall about half way to the top.

They are lined holes that are exactly the same size as the drain plug hole at the bottom.

I put my extra drain plugs in them and that solved the problem.

What are these holes for? Why on earth aren't they plugged??

-Ross

could the holes be for the trim tab indicators?

be sure to quickly glass in the holes..don't want your transom rotting out soon.

Noli- they are glassed and sleeved like the hole for the train plug, so transom rot is not a related issue.

went to look at Gary's transom shot, and don't see anything that would require those holes...maybe Rick knows.

another guess is that the holes could be for the integrated swim platform. leaving them open for any water/condensation to exit thru the holes. When you went in reverse, the water trapped in the swim platform were ejected...now I'm really curious

Noli, hit it right on the head !!!
rbarna, As Noli said, those holes are for any trapped water to get out of the knees of the swim platform.

So why does water come in every time I go in reverse?

Should I plug them or not plug them?

It sounds like water gets in at the bump rail and the drains are by design. Maybe that seam needs to be resealed if you have a lot of water.

In addition to what Pat said, if you open the image above and zoom to 150%, look behind the gentleman's left foot, you will see a vent of some sort...look into that ...or if you have pop-up cleats around the swim platform area check to see where the drain to the pop-ups are directed to...