A Floating-Type Attenuator of Reflection Waves by using Wave Slamming Phenomena

In coastal and harbor developments, a construction of vertical sea walls and breakwaters in the sea is often necessary to make a calm water region. Secondly effects of such a construction on the neighboring coastal and ocean environment must be reduced. High reflection waves from the vertical sea wall of-the new construction area may become one of such concerns. In order to reduce the reflection waves effectively, a floating-type wave attenuator that causes wave energy dissipations due to wave slamming is proposed. Model tests show that the floating attenuator is effective for reducing reflected waves from a vertical sea wall, especially for comparatively short waves. It was recommended that the floating attenuator must be near the anti-node position of standing waves.