Join Date: Aug 2006
Thanked 28 Times in 27 Posts
Rep Power: 13
My understanding is that there is no need for water supply for cooling on a sailboat with a PSS shaft seal. It's only required on higher horsepower power boats.
The only hose attached to a sailboat PSS shaft seal is an air supply tube to prevent air lock in the bellows. That tube goes upwards above the water line, not down to a seacock.