posted 04-28-2002 09:40 AM ET (US)
It has to be in the aft section.The raw water pick up for the head and the discharge seacock for the holding tank are under the vanity and if those were leaking you'd see it in the cabin sump.
How did you change the transom drain plug? Pull the boat? This plug is a bronze threaded one which installs from the exterior below the water line not from the interior of the bilge.
The other suspects would be the discharge for the macerator which is used to drain the fish boxes and the water pick up for your raw water wash down and filling the bait well.
Also don't discount water entering the Salt Shaker "Whaler Drive" bracket it will sweep through the wiring cut outs into the bilge thus giving the impression the bracket interior is dry!
Your sure it is salt water! The reason I ask could be a slow leak from your fresh water system. Just an added thought.
That's about all I can think of at present, hope it helps.