Editing Wing loading (section)

===Water ballast use in gliders===
Modern [[Glider (sailplane)|gliders]] often use water ballast carried in the wings to increase wing loading when [[Lift (soaring)|soaring]] conditions are strong. By increasing the ''wing loading'' the average speed achieved across country can be increased to take advantage of strong thermals. With a higher wing loading, a given [[lift-to-drag ratio]] is achieved at a higher [[airspeed]] than with a lower wing loading, and this allows a faster average speed across country. The ballast can be ejected overboard when conditions weaken or prior to landing.