I will be at the boat on Wednesday when the yard helps me pull the engine. I will take some pictures and post them.
At this point I realize that I didn't know much about the seacocks. When I purchased the boat, I was instructed to open these two seacocks prior to starting the engine and then to close them when finished. Never looked at routing or what they went to. Guess its about time I find out more about what lurks in the dark corners.
I do know now that only the first seacock is the raw water inlet and I now understand that the water circulates in the engine and exits via the exhaust.