Breakwater vs. Groyne

Breakwaternoun

a construction in or around a harbour designed to break the force of the sea and to provide shelter for vessels lying inside

Breakwaternoun

(nautical) a low bulkhead across the forecastle deck of a ship which diverts water breaking over the bows into the scuppers

Breakwaternoun

On beaches: a wooden or concrete barrier, usually perpendicular to the shore, intended to prevent the movement of sand along a coast.

Breakwaternoun

Any structure or contrivance, as a mole, or a wall at the mouth of a harbor, to break the force of waves, and afford protection from their violence.

Breakwaternoun

a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away

Groynenoun

An often wooden structure that projects from a coastline to prevent erosion, longshore drift etc.; a breakwater.

Groynenoun

See Groin.

Groynenoun

a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away

Groyne

A groyne (in the U.S. groin), built perpendicular to the shore, is a rigid hydraulic structure built from an ocean shore (in coastal engineering) or from a bank (in rivers) that interrupts water flow and limits the movement of sediment. It is usually made out of wood, concrete, or stone.