| Summary: | Damage of the beach has appeared material and life losses. Therefore, It
needs beach protection with sand nourishment or artificial sandy beach. Its
problems are the operation and maintenance relatively high cost and need borrow
area to supply the sand requirement due to so much the sand loss.
protection is needed to keep the sandy beach due to wave attack. Geotextile tube
(geotube) as submerged breakwater is the one alternative as artificial beach
protection due to erosion. This research aim to know the influence of the
sediment characteristic to artificial sandy beach profile behind the structure.
( d
The fisical model was conducted by way sediment variety are Krakal
beach sand 50=0.433 mm), laboratory sand (d50=0.67 mm), and Tanjung Ann
sand (d50=1.47 mm) Likewise, the height of the submerged structure is variated
(Rc/hs: -0.28
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