3. -Spring Line Storage.
-Sterio speaker.
-Raw water discharge outlet.
I have 10 feet of 3/4" intake hose for the raw water pump laying in the motor well. I can hook a 25' garden hose to it and 6' discharge to this male connedtion. Now I can pump water from anywhere within 35' of the stern of our boat. This also gives us a total of 3 bildge pumps.
On the starboard side is the same female connection hooked up to our fresh water pump.