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From Openwaterpedia

noun - A jetty is any of a variety of structures used in river, dock, and maritime works that are generally carried out in pairs from river banks, or in continuation of river channels at their outlets into deep water; or out into docks, and outside their entrances; or for forming basins along the coast for ports in tideless seas.

The forms and construction of these jetties are as varied as their uses (directing currents or accommodating vessels), for they are formed sometimes of high open timber-work, sometimes of low solid projections, and occasionally only differ from breakwaters in their object.

The ocean swimmers had to swim out and around the rock jetty near the mouth of the river.


Jetty is derived from the French word jetée, "thrown", and signifies something thrown out.

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