A multifunctional floating breakwater includes: a plank platform, a first buoy, a second buoy, a first wave baffle, a second wave baffle, a first arc breast wall, a second arc breast wall, upper inclined supports, lower inclined supports and a net cage. The multifunctional floating breakwater integrates a floating breakwater and a wave-energy power generation device, which can not only maintain good stability of the water surface in a harbor, but also generate electric energy, and allow for aquaculture and other activities as well, and has advantages of being movable and not limited by water depth and geology. In addition, the invention has a simple structure, easy production and maintenance, no pollution to the marine environment and therefore wide application prospects.

A fixed permeable breakwater which also serves as a wave power generating device is provided and includes a structure, a structure fixing device and a wave-activated generator set, the structure is connected with seabed through the structure fixing device, holes are arranged on an outer side of upper arc vertical walls of the structure, and spiral vane sets are placed in the holes; a spiral-gear generator is installed on the horizontal bearing plate, and waves push the spiral vane sets to rotate, and then push the spiral-gear generator to generate electricity. The breakwater can be applied to sea areas with deep water, large waves and complex terrain, while reducing the influence of waves and providing a stable water environment for the surrounding sea areas, it has good wave-absorbing performance, convert wave energy into electric energy, and effectively solve the power supply problem of port areas or island residents.

A fixed permeable breakwater which also serves as a wave power generating device is provided and includes a structure, a structure fixing device and a wave-activated generator set, the structure is connected with seabed through the structure fixing device, holes are arranged on an outer side of upper arc vertical walls of the structure, and spiral vane sets are placed in the holes; a spiral-gear generator is installed on the horizontal bearing plate, and waves push the spiral vane sets to rotate, and then push the spiral-gear generator to generate electricity. The breakwater can be applied to sea areas with deep water, large waves and complex terrain, while reducing the influence of waves and providing a stable water environment for the surrounding sea areas, it has good wave-absorbing performance, convert wave energy into electric energy, and effectively solve the power supply problem of port areas or island residents.

An adjustable attachment device includes an elongate body defining a plurality of openings and an attachment bracket attached to and slidable relative to the body and defining an opening. The adjustable attachment device selectively and adjustably interconnects a fixed piling and a floating dock assembly. A fixed attachment device includes a main portion defining an opening and a generally triangular end portion defining an opening. The fixed attachment device rigidly interconnects a fixed piling and a floating dock assembly. A bumper attachment device includes a first and second end portions defining openings and a rotatable bumper. The bumper attachment device is connected to a floating dock assembly.

A device for damping hydrosound in liquid having a frequency range emitted from a sound-emitting body in the liquid includes: a plurality of individual gas volumes distributed in the liquid in an area of the sound-emitting body and at a distance from each other, each of the individual gas volumes being operable to reduce the hydrosound through resonant oscillations; and at least one mass body disposed in the liquid, the individual gas volumes being connected to the at least one mass body so as to prevent the individual gas volumes from rising up in the liquid.

An apparatus configured to extend onto and retract from a body of water a flotation mat. The apparatus includes first and second spaced apart support members such that both support members include an upper and a lower end. The spaced apart support members are secured to a boat dock by mounting hardware. First and second vertically slidable members are slidably mounted to the first and second spaced apart support members. The apparatus also includes a rotatable shaft that extends between the upper ends of the first and second slidable members. A sprocket assembly is mounted to one of the ends of the rotatable shaft to facilitate either manual or powered rotation of the shaft for purposes of extending or retracting the mat onto or off the body of water.

An interlocking modular smart seawall diversion and recreation system provides step-shaped diverter sections arranged side-by-side along a shoreline. The diverter sections slope from a base end up towards an upper end. To break kinetic energy of waves, and divert waves, the diverter sections form steps with curved risers and horizontal treads. The system forms a diversion path for the waves that reach the upper end of the modular walls and recirculate the wave energy back to divertor chamber and natural environment. Foundation pilings project into the ground and extend up to support the wall sections. The bottom end of foundation pilings terminates at sheared attachments having a tapered cross section and an edge for securely anchoring into the ground. A platform atop the diverter sections provides a pathway; a lighted platform for recreational activities; and transparent skylight portals for observing aquatic wildlife in water below and creating an indigenous ecosystem.

An interlocking modular smart seawall diversion and recreation system provides step-shaped diverter sections arranged side-by-side along a shoreline. The diverter sections slope from a base end up towards an upper end. To break kinetic energy of waves, and divert waves, the diverter sections form steps with curved risers and horizontal treads. The system forms a diversion path for the waves that reach the upper end of the modular walls and recirculate the wave energy back to divertor chamber and natural environment. Foundation pilings project into the ground and extend up to support the wall sections. The bottom end of foundation pilings terminates at sheared attachments having a tapered cross section and an edge for securely anchoring into the ground. A platform atop the diverter sections provides a pathway; a lighted platform for recreational activities; and transparent skylight portals for observing aquatic wildlife in water below and creating an indigenous ecosystem.

A wave attenuator system for protecting a floating dock or other structure from incoming wake created by wind or vessel is disclosed herein, in various aspects. The wave attenuator system may include a substantially rectangular curtain made of a water-impermeable flexible material, in various aspects. The curtain top edge may be secured along the length of at least one of the sides of a dock, in various aspects. The curtain bottom edge may be suspended in a body of water a predetermined distance below the water surface, in various aspects. The bottom edge may include a weighted material to maintain the curtain in a substantially vertical orientation, in various aspects. The wave attenuator system is operable to redirect waves impacting the curtain downward to reduce wave action against the dock or other structure, in various aspects.

The invention is directed to a dock system that can be removably attached to fixed piers. Specifically, the system can include a series of deck sections and an optional railing that extend from a footing on the shore. The deck sections are releasably secured together by pins. The system can be installed on a series of fixed piers that are built and constructed in place to be permanent. Advantageously, the deck sections of the disclosed system can be added or removed from the fixed piers when desired by the user, such as prior to exposure to hurricanes and other severe weather conditions. Thus, the disclosed system includes modular deck sections and railing sections that can be assembled or disassembled as desired by a user.