I am in the process of converting a
water tank to a
fuel tank. The two existing
fuel tanks are on the port side and vent to the stern. The vent hose goes up to the
hull deck joint and then to the stern of the
boat.
The
water tank being converted is on the port side, and the
current vent goes to the
galley sink... It is difficult to
route the vent hose along the starboard side, so I am planning to
route the hose just above the tank under the
cabin sole and then run it parallel to the port side vent hoses.
It has been suggested that the vent hose needs to go vertical ASAP, and that if I run it across the
boat there is a risk of a vacuum forming. I can't see why, and if so how bad the risk is. Explanations gratefully received. Also would a loop first help?