This is the combination hookup for the explosion proof blower and the washer/dryer exhaust. The bellows goes into the bilge to suck out any fumes that may be lingering. The washer/dryer exhaust will connect into the black pipe. The tube it hooks to goes up to the top of the pilot house.	In the same area is the water control valve for the washer dryer. I was able to run a rubber hose from here, under the side wall and up to the washer/dryer.
You can see the rubber hose coming out the top hole where it will connect to the washer/dryer, all hidden behind the wall. Lots of work, yes...