A construction made to provide an area of calm water for shipping or for the protection of a coast or harbour against the effects of wave action.
Note: The term mole is also used for a breakwater of solid construction. It may be possible to drive along the top of a mole, and also to berth vessels alongside.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM