A very common LVP that has a physiologic (0.9gm%) concentration of sodium chloride.

Saline solution that has the same balance as the fluids in the body. Saline is administered when the patient requires fluids due to dehydration or when nothing may be taken by mouth because of the possibility of impending surgery. (Example: "He's in shock. Start two large -bore Ivs, normal saline, wide open")

What you are doing when the sea is calm, the wind in the right direction, your boat has no leaks and you are on exactly the right course and heading. Sometimes referred to as 'Plain Saline'.