J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Air Intake/Engine Ventilation Hose

Does anybody know what the light blue expandable air intake hose is? My hose is split into several pieces, and it no longer vents/intakes air from outside. The portion of the hose remaining just circles around in the engine compartment and doesn't exit to outside.

I also need to get some cowls for the vent hose. I still have the locations for the cowl vents but both are blanked off. Does anybody know which cowl vents to use? I would prefer to use the existing through-hull fitting.