An externally-adjustable module for a wave attenuation system formed by
connecting a plurality of panels in a structure positioned in a body of
water, causes the dissipation of wave energy. Different configurations of
panel, having different flow characteristics, used in the structure, and
different types of connector used to connect panels, create different
patterns of water flow within the structure, and contribute to wave
energy dissipation. Units deployed in harbors, rivers, marinas and the
like, help to prevent beach erosion and can facilitate beach nourishment.
Embodiments can be utilized as a security barrier, preventing intrusion
by trespassers, divers or various sized boats. A variety of sensors can
be mounted to the structures, enabling detection of movement, chemical
and biological agents, explosives or radiation. A submersible gate,
comprising panels and a buoyancy control mechanism, allows for passage of
boats and can be controlled remotely.