thru-hulls lead where ?

[samuel]

Hunter 25.5 (yr. 1985) Just came into it. Need to identify things !
In the bow--2 thru hulls, below w/l ,( no hoses ) appear to be inlet / outlet for head ???
Below sink : hose leading directly to thru hull ( sink is above w/l ,valve is not ). Cheap corrugated hose held by single rusty hose clamps.
Is there magic here here that I've never seen before ? And yes it's in water, didn't sink and in great shape w/ new nissan o.b. .
Thanx

 

[JoeWhite]

Well you are in luck since I have the 1984 25.5 version. The two bow through hulls are for depth sounder and knot meter! You may find wires leading back to the Bidata display.The brass through hull below the sink is for the drain for the sink - yes a corrogated plastic hose. Two clamps on the bottom and one on the sink side.
I have owned this boat for the last 6 year and learned much about this boat. Let me know if I can help you with anything else.