Here I am. Watching the Olympics.
The mast is keel stepped and you will also have some fresh water coming down the mast into the bilges. When checking whether it is fresh or salt water, always wash your finger before dipping it. If not, you could be tasting the salt from your finger. I usually just have my dog lick my finger first
This salt water could also be from decommissioning the engine. I always run fresh water and then AF through my raw water side but not everyone does that. They could have changed the zinc and just let the water drain into the bilges.
There is always the chance that this water came in through the keel joint. Look for any sign of a crack or gap where the keel attaches to the hull. These keels do not flex much on the stub and it is possible to get them faired perfectly with no crack.
A great Ericson website is at
www.ericsonyachts.org
Check out my link below and go to projects for some the work I have done on mine.