Planing (boat)
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Planing is the mode of operation for a waterborne craft in which its weight is predominantly supported by hydrodynamic lift, rather than hydrostatic lift (buoyancy).
A Contender dinghy planing on a broad reach. Note the typical way the bow lifts up while the stern skims over the water.
Royal Navy World War II motor torpedo boat planing at speed on calm water showing its hard chine hull - note how most of the forepart of the boat is out of the water
Albacore dinghy planing
Lift (force)
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When a fluid flows around an object, the fluid exerts a force on the object. Lift is the component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag force, which is the component of the force parallel to the flow direction. Lift conventionally acts in an upward direction in order to counter the force of gravity, but it is defined to act perpendicular to the flow and therefore can act in any direction.
The 1902 Wright Glider shows its lift by pulling up
A cross-section of a wing defines an airfoil shape.
Angle of attack of an airfoil
An airfoil with camber compared to a symmetrical airfoil