We did a bit more analysis of this last night.
From what I can gather:
The liner includes the two engine mounts, the molded drip pan under the engine, the track that the companionway steps sit in, etc. Stuffing box drips go there. I have an absorber in there now. The limber holes on the sides of the track where the companionway steps sit do drain somewhere. (Not sure if it's into the bilge or the void under the engine.) This whole area is bone dry.
However, there appears to be a void between the liner and the hull, and I have a lot of water in there. The inboard sides of each of the engine mounts have cutouts where I can reach an arm down into the void.
There is also water under each of the quarterberths at their low points. Feeling around, we determined that these connect to the void under the engine.
So where does this void drain? We've reached down through the engine mounts, forward, under the drip pan, and started finding a ton of crud.
Trying to work backwards from the bilge opening aft, all we see are the hose from the Whale Gusher and a small diameter white plastic tube. Is that the drain from the icebox, or is it supposed to connect this void to the bilge?
Any thoughts on where this void is supposed to drain? I'm not seeing anything.
Also, I'm trying to figure out what is filling it. I don't think it's the stuffing box; otherwise I'd expect a drip pan full of water. My two best guesses are the ice box drain, or a pretty bad portlight leak that is dripping water on the tops of both quarterberths.