planende

Planende is a term used in several Germanic languages, notably Dutch and some Scandinavian languages, as a present-participle or adjective form related to the verb meaning to plane or to plan. The exact meaning depends on language and context, but in general planende denotes an ongoing action or a state resulting from planing. In English-language technical writing, the corresponding concept is usually referred to as planing.

In woodworking, planing is the process of smoothing or thinning timber using a hand plane or a power planer. The planende form may be used in descriptions of an ongoing planing operation or of surfaces that are being planed. Tools involved include hand planes, power planers, and surface-smoothing techniques that remove thin shavings to achieve a flat, even face.

In naval architecture and marine engineering, planing describes a mode of hull operation where, at sufficient speed, the hull rises out of the water and skims on top of the surface rather than displacing a large volume of water. Planing hulls generate lift through hydrodynamic forces, reducing drag within certain speed ranges and enabling higher speeds. Planing is contrasted with displacement hulls, which move through water by displacing a body of water and maintaining greater wetted area at all speeds.

Etymologically, planende derives from the root plan- or plane, related to the act of smoothing, flattening, or shaping material, with the suffix indicating a present or qualitative aspect in the relevant language. The term is more common in Dutch and some Scandinavian contexts; in English, planing or planing-related phrases are typically used.

See also: planing hull, woodworking plane, planing (woodworking).