2025 R27 saltwater accumulating in aft bilge

[CaptSJD]

What would cause salt water to accumulate in the aft bilge. My bilge pump has been intermittent. I vacuumed all the water out and the boat sits in the marina and I accumulate 3 -4 inches of slat water in about 24 hours . If you take the intermittent bilge pump out of the equation, is that normal to have salt water start filling aft bilge up? I don’t see anything leaking. Where do you think it would come from?

 

[Pandion]

Three-to-four inches of saltwater in 24 hours is definitely not normal and would indicate a potentially serious leak. Our '21 R27OB does not take on any water while sitting in its slip.

There are not many penetrations below the waterline our our boats, so that narrows down the suspect areas that could allow water in if you're in a protected marina. I'd start with the raw water intake system for the washdown pump, head, and heat pump. We don't have AC on our boat so I'm not very familiar with that system, but it would be the first thing I checked if you run it while you're moored.