We Recently Downsized from a Ranger Tugs R29S to a Ranger Tugs R25OB —    Above-Left:  Interior of the hull, behind the refrigerator. Here you’ll see I installed the fitting to the hull that houses the 12V fan, to exhaust the Airhead solids tank. Above-Right:  The grey hose is the vent hose. It runs from … Continue reading Black and Freshwater Tank Solution on a Small Boat