2006-06-15 22:05:51 · 8 answers · asked by Anonymous in Cars & Transportation ➔ Boats & Boating
they are big groups of rocks that stick out into the water and break the waves
2006-06-15 22:09:36 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A Jetty [Plural : Jetties] is a protective structure, built of stone or concrete, which extends from the shore into the sea-water to prevent a beach from getting washed away.
2006-06-16 05:12:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
As said above. They, also, can serve different purposes. On Rivers they may be under the water and you not see them, this application they are used to Direct the River where the Corps of Engineers want it to go to keep the Channel consistent. Then they use the Buoys so you know where the channel is and not hit them with your Boat/Prop.
2006-06-16 11:56:41 · answer #3 · answered by Snaglefritz 7 · 0⤊ 0⤋
In Australia they are commonly known as jetties =smallish piers where you tie up your boat
2006-06-16 05:13:35 · answer #4 · answered by mintoburn 1 · 0⤊ 0⤋
a jetty can also be any sort of pier type structure, to launch boats off etc.
2006-06-16 05:11:27 · answer #5 · answered by oliver j 1 · 0⤊ 0⤋
a pile of rocks put out in a line into the surf zone, it stops the sideways erosion of the beach by redepositing the sand after the lateral current off the beach moves it by "entrainment". (It stops the beach from eroding)
2006-06-16 05:09:53 · answer #6 · answered by Anonymous · 0⤊ 0⤋
there rocks the animal rights nuts put out there to sink fishing boats. just stay away from them and youll be alright. oh yea the other answers are good too.
2006-06-16 17:41:02 · answer #7 · answered by wannac 3 · 0⤊ 0⤋
some of the army corps of engineers best and worst work!
2006-06-16 10:33:41 · answer #8 · answered by nh_surf 2 · 0⤊ 0⤋