The Bottleport is a patent pending hydration solution for small sailboats and other watercraft! It was invented after having too many water bottles go over the side of the Laser, getting tangled in the sheet or have to be stuffed away where I can't get to them easily.
The Bottleport screws into a Ronstan 5" inspection port (Ronstan part #PNP97) with the same watertight seal as the original lid. It provides a way to hold a drink container that is totally secure, out of your way and still immediately accessible with one hand...FINALLY.
Once you have used this on your boat it will become indispensable.
--You must have or install a Ronstan 5" inspection ports (Ronstan part #PNP97) in your boat to use the Bottleport.