FIELD: structures or apparatus for, or methods of, protecting banks, coasts or harbours.
SUBSTANCE: device comprises shore structure made as embankments and 
-shaped tunnels arranged inside the embankments. The tunnels are directed so that inlet and outlet orifices thereof are transversal and face the shore line. Lower tunnel parts have lengths and cross-sectional areas exceeding that of upper tunnel parts. Lower tunnel parts are located at sea level, upper ones project over lower tunnel parts. Tunnels have curvatures providing 180° rotation of velocity vector of liquid stream entering into lower tunnel part as liquid flows via the tunnel to tunnel outlet.
EFFECT: decreased damage caused by tsunami reaching island and continent shore line.
2 cl, 3 dwg, 1 ex
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