The line that goes out to the hull of the ski. It has an outlet on the outside. The hose however is not attached to anything on the other end. I can't seem to find anything that it is suppose to be attached to inside the hull. To my knowledge this pwc doesn't have a bilge pump. What is the purpose of this hose? Its a 2010 GTX 155. Maybe someone that has a 2010+ ski can open up the battery compartment and follow the line to see where it leads to? I figured maybe it might have ripped off when the battery was removed for winterization and i am prepping the ski to go the water, don't want it sinking on me!