Floatable coastal system for providing a coastal area and floatable body for use in the same
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2026-02-03
- Publication Date
- 2026-08-13
Smart Images
Figure NL2026050034_13082026_PF_FP_ABST
Abstract
Description
[0001] Floatable coastal system for providing a coastal area and floatable body for use in the same
[0002] The present invention relates to a floatable coastal structure, and more particularly to a floatable coastal system for providing a beach area and wave protection to a portion of a larger floatable structure. The invention also relates to a floatable body for use in a floatable system according to the invention.
[0003] Coastal cities around the world are facing potential challenges due to rising sea levels, land scarcity, and the need for improved infrastructure. As urban populations continue to grow, there is a demand for innovative solutions that can provide additional habitable space while adapting to changing environmental conditions.
[0004] Traditional land reclamation methods, such as creating artificial islands or extending shorelines, often have significant environmental impacts and may not be sustainable in the long term. These approaches can disrupt marine ecosystems, alter coastal dynamics, and may become increasingly vulnerable to sea level rise and extreme weather events.
[0005] Floating structures have emerged as a potential alternative to conventional coastal development. These structures can offer flexibility in terms of location, scalability, and adaptability to changing water levels. However, integrating floating structures with existing coastal infrastructure and ensuring their stability and safety in marine environments presents numerous engineering challenges.
[0006] One consideration for floating coastal developments is the need for effective wave attenuation systems. Without proper protection, coastal cities as well as floating structures can be subject to excessive motion and potential damage from wave action. Traditional breakwaters and sea walls used to protect land-based coastal areas may not be suitable or cost-effective for floating developments.
[0007] Additionally, creating appealing and functional coastal environments on floating structures poses unique design challenges. Replicating the amenities and aesthetic qualities of natural beaches while maintaining the structural integrity and stability ofa floating system requires innovative approaches to engineering, design and urban planning.
[0008] As coastal cities explore new ways to expand and adapt to environmental changes, there is a growing need for integrated floating coastal systems that can provide both habitable space and protective functions. Among other, one of the key protective functions is wave protection and erosion prevention. Such systems must balance technical performance with environmental considerations and the creation of desirable living spaces.
[0009] It is a first objective to provide a floatable coastal system which provides for wave attenuation, in particular an improved wave attenuation compared to existing solutions.
[0010] It is a second objective of the present invention to provide a floatable coastal system which allows for integration with an existing floating structure which allows for accommodation of variable water levels.
[0011] It is a third objective to provide a floatable coastal system which can be easily moored to prevent drift of the coastal system.
[0012] The present invention thereto proposes a floatable coastal system for providing wave protection to a coastal area to a portion, in particular a perimeter, of a floatable structure, such as a floatable building and / or city, comprising: at least one floatable body having a predefined buoyancy, the floatable body comprising; a primary side, wherein said primary side is configured to be connected to an adjacent floatable structure, and a secondary side, preferably opposite to the primary side, an upper surface, wherein at least during use, at least a part of said upper surface is at least partially exposed above a water surface level, and a bottom surface, wherein optionally a beach area is arranged on or formed by at least a portion of the upper surface, in particular an exposed portion of the upper surface, of said floatable body, at least one mooring structure, wherein preferably part of said mooring structure is formed by and / or provided onto the floatable body for mooring the floatable body to a fixed reference, such as a mooring pile; and optionally at least one, preferably partially fluidly permeable or semi-permeable,wave barrier, wherein said wave barrier is preferably coupled, or configured to be coupled, to the floatable body, preferably to the secondary side of the floatable body. It is imaginable that the floatable coastal system comprises a plurality of spaced apart mooring structures.
[0013] The combination of the floatable body, mooring structure, and wave barrier makes the system according to the present invention suitable for various coastal and marine environments. Particularly, the floatable body, which may form the base of the floatable structure, can be easily adapted according to the needs of existing floatable structures. The floatable body, which may alternatively or additionally be referred to as the floatable base or float, may via the primary side thereof be easily coupled to existing floatable structures. The floatable structures may for example be existing floating buildings or even a part of a city. Via the mooring structure it is possible to moor the floatable body to a fixed reference to prevent that, over time, the floating city or building floats away due to currents and / or waves. The mooring structure may to this end be configured to co-act with a mooring pile. The mooring structure preferably allows for vertical movement of the floatable body with respect to e.g., the mooring pile, and the mooring structure simultaneously prevents a lateral movement of the floatable body in at least one lateral direction, preferably all lateral directions. As such, the invention allows the floatable coastal system to easily accommodate for the varying water levels when in use. The floatable system is designed to be implemented in a modular fashion, allowing for the replication of the floatable coastal system in series to protect a larger area. The system is designed to accommodate variable water levels and wave conditions and can be replicated in series to protect extensive areas of a floating structure or coastline. The modular design of the system allows for cumulative wave protection benefits when deployed in series, thereby improving the protection for adjacent floating structures. The interconnection of multiple units enhances the overall stability and effectiveness of the system. In the present invention the term floatable shall be understood as to be able to be floating during use. However, it does not necessarily have to be afloat and may also be positioned on land, e.g. during manufacturing. The wording “beach area” shall be interpreted as an area where the upper surface and the water meet. Hence, may not necessarily involve a sand-like beach area, but may be formed by the upper surface of the floatable body meeting the water in which the coastal system is positioned.It is imaginable that the primary side and / or secondary side are substantially straight. This may particularly be beneficial in case of a rectangular floatable structure to which the coastal system is to be connected. However, it is also imaginable that the primary side and / or secondary side are non-straight, such as curved, serrated, or the like. This may enhance the natural looks and feels of the artificial coastal structure. The non-straight primary side and / or secondary side may thus be formed in a nature inspired shape. This is especially the case if no permeable wave barrier is applied.
[0014] The fixed reference may be interpreted in various ways, including but not limited to a mooring pile rigidly connected or inserted into the seabed, which could be formed by a steel, concrete, or composite pile driven deep into the seabed, providing a stable anchor point for the floatable coastal system. Another example could be a large floating structure with significant mass and stability, such as a semisubmersible platform or a floating breakwater, which, while not fixed to the seabed, may be sufficiently stable due to its size and design to serve as a mooring point for the floatable coastal system. Since large floating structures with significant mass and stability will be subject to some motion due to environmental loads (waves, currents, wind), it may be preferred to anchor such fixed reference by means of one or more mooring lines or other mooring system to prevent drift. Other interpretations may include natural geological features like submerged rock formations or small islands, artificial reefs or underwater structures specifically designed for mooring, Tension Leg Platforms (TLPs) anchored to the seabed using tensioned cables or tethers, large buoys or series of interconnected buoys anchored to the seabed with heavy chains or cables, or even decommissioned ships or barges intentionally sunk and secured to the seabed to create stable mooring points. These examples illustrate various possibilities for a "fixed reference" that could potentially be used for mooring the floatable coastal system, each offering different characteristics in terms of stability, permanence, and environmental impact.
[0015] Since the floatable coastal system is provided with a wave barrier, it may provide for efficient wave attenuation. Particularly if the wave barrier is fluidly permeable it may allow passage of water, whilst simultaneously dampening the waves. This mayprovide for a relatively calm area of water when in use, whilst preventing larger waves from reaching the utilities of the floatable city or building when connected thereto. Preferably, the wave barrier is a static barrier and / or suspended barrier. The combination of the static and / or suspended and permeable barrier provides that it is relatively safe for marine life. Furthermore, the optional beach area provided onto and / or formed by the upper surface enhances the recreational value of the coastal system and provides a more natural coastal environment within the floating structure. Additionally, the floatable body and in particular in case of its sloped design, in particular the sloped upper surface, contribute to wave attenuation, further protecting the floating entities behind the floatable coastal system by dissipating wave energy before it reaches them.
[0016] According to some embodiments, the floatable body is at least partially formed by a hollow structure. The hollow structure of the floatable body provides the buoyancy to the floatable body. Due to the use of a hollow structure, weight of the floatable body can be saved compared to solid designs, which may need to rely on a relatively low density for providing the required buoyancy. Additionally, the hollow structure may be easily scaled according to the dimensions required for the floatable coastal system. The hollow structure may be at least partially formed from various materials, such as but not limited to, metal, such as (marine-grade) aluminum, steel, (reinforced) concrete, or composite materials. These materials may be selected based on factors including durability, corrosion resistance, and cost-effectiveness. In some variants, the hollow structure may be at least partially formed out of a buoyant material, such as closed-cell foam, to provide additional buoyancy and structural integrity. The floatable body may be composed of a plurality of interconnected hollow segments and / or compartments. In some variants, the hollow structure, segments or compartments may be filled with different materials, such as water, to adjust / control buoyancy. Where reference is made to a segment or compartment, this may be replaced interchangeably by the other term. This modular design offers several advantages. The system can be easily adapted to different sizes and shapes by adding or removing segments / compartments, providing customizability. Multiple (preferably partially independent) segments or compartments may enhance safety, as damage to one segment / compartment does not compromise the entire structure, offering redundancy. To this end, it is not required that all compartments are independent from one another, but it may be that some groups of compartments are mutuallyindependent, that is, the hollow spaces in the compartments are independent or not connected. The segmented design may also allow for better weight distribution and balance of the floatable body. Additionally, smaller segments can be transported more easily and assembled on-site, facilitating ease of transport and assembly. This may especially be beneficial if the size of the floatable body exceeds regular dimensions for convenient transport (such as standardized containers or trucks). The interconnected hollow segments may be joined using various methods, such as welding, bolting, or interlocking designs.
[0017] In some embodiments, the floatable body is designed with a varying height profile. The height of the floatable body on the primary side may be larger than the height on the secondary side. This configuration creates e.g., a sloped and / or stepped profile for the floatable coastal system, which can offer several advantages. The higher primary side, which is typically connected to the adjacent floatable structure, provides a smooth transition between the coastal system and an existing floating structure such as a floating building or city. It also allows for better wave deflection.
[0018] In some embodiments, at least a part of the upper surface of the floatable body is downwardly inclined from the primary side towards the secondary side. This inclined surface may create a gradual slope that can serve multiple purposes. It can facilitate water drainage, enhance the aesthetic appeal of the coastal area, and provide a more natural transition from the elevated structure to the water level. Preferably, at least a portion of the downwardly inclined upper surface of the floatable body is submerged. The downwardly inclined upper surface of the floatable body essentially forms a natural beach like area, not necessarily requiring sand, where waves attenuate by the sloped configuration. The inclined upper surface may thus also contribute to wave energy dissipation as waves move up the slope, further improving the system's wave attenuation capabilities. Especially the combination of the permeable wave barrier and the inclined upper surface synergistically enhance the wave attenuation of the structure to which the coastal system is connected. Additionally, this inclined upper surface can be particularly beneficial if a beach area is incorporated, as it mimics the natural slope of a shoreline, creating a more authentic coastal experience for users of the floating structure. The height difference between the primary and secondary sides can be achieved through different configurations. A linear slope may for example define aconsistent gradient from the higher primary side to the lower secondary side, offering a simple design for water runoff and wave energy dissipation. In some embodiments, a stepped profile might be utilized, creating distinct terraces that can serve multiple purposes, such as a pavement or seating areas or platforms for different activities. A combination of linear, and / or curved, and / or stepped variations of the height difference is also conceivable. The specific slope design can be tailored to suit local environmental conditions, aesthetic preferences, and the intended use of the coastal area, while maintaining the core principle of a higher primary side transitioning to a lower secondary side. The floatable body may also serve other recreational purposes, related to the region in which it will be placed and the needs of the area. For example it may be used as coral reef zone block, enhancing both the ecological and leisure value of the area.
[0019] In certain embodiments of the floatable coastal system, at least a portion, in particular a downwardly inclined portion, of the floatable body is at least partially submerged during use, particularly a portion on or near the secondary side. This submersion can serve multiple purposes and offer various benefits to the overall system. The submerged portion may act as a natural extension of the underwater environment, potentially supporting marine life and enhancing biodiversity around the structure. It can also contribute to the system's stability by providing additional water resistance and dampening wave energy. A synergistic wave attenuation may be achieved by the submerged portion and the wave barrier. That is, the combination essentially establishes a two-factor wave attenuation, wherein a first attenuation is achieved through the wave barrier, and a second wave attenuation is achieved through the submerged portions as the (residual) wave passing through the wave barrier is attenuated in the submerged area, which typically lowers the depth of the water column locally. This is particularly the case where the submerged portion is at least partially formed by the inclined upper surface of the floatable body. The degree of submersion may vary depending on factors such as water level fluctuations, tidal conditions, and desired coastal effects. In some variants, the submerged portion might feature a gradual slope or stepped design, creating a shallow water area that mimics natural coastal topography. This configuration can enhance the recreational value of the system by providing safe, shallow areas for water-based activities. Additionally, the submerged portion may incorporate specialized materials or textures to promote marine growth or tofacilitate specific hydrodynamic effects, further integrating the floatable coastal system with its aquatic surroundings.
[0020] In some embodiments, the floatable body of the floatable coastal system comprises at least one retaining barrier. This retaining barrier is protruding in at least a vertical direction with respect to the upper surface of the floatable body and configured to retain beach material such as sand. This allows beach material, such as sand, to be retained on the designated beach area of the floatable structure. The retaining barrier may vary in height and design to effectively contain different types and volumes of beach material. In some variants, the barrier might be a continuous structure along the perimeter of the beach area, while in others, it could be a series of interconnected segments or strategically placed individual barriers. The design of the retaining barrier may also incorporate features to enhance its aesthetic appeal, such as curved or textured surfaces, while maintaining its functional purpose.
[0021] Additionally, the barrier might be constructed with materials that resist corrosion and withstand the marine environment, ensuring longevity and minimal maintenance. In certain configurations, the retaining barrier could be adjustable or removable to allow for flexibility in the beach area's layout or to facilitate maintenance and replenishment of beach material. This feature contributes significantly to creating and maintaining a stable, appealing beach environment on the floatable coastal system, enhancing its recreational value and overall functionality. It is imaginable that the retaining barrier overlaps or coincides with the submerged portion of the upper surface during use. The retaining barrier may as such form an accommodating space for accommodating the beach material. The retaining barrier may also be arranged on a part of the upper surface of the floatable body which remains above a water level.
[0022] The floatable coastal system may comprise at least one ballast weight for enhancing stability, and / or setting the correct upright position, and / or defining the exact level of submergence, of the floatable body. This ballast weight is strategically positioned within the floatable body such that the center of gravity and the center of buoyancy are mutually vertically aligned, at least when the floatable body is in its upright position. This alignment is beneficial for maintaining the structure's stability in various sea conditions. In preferred embodiments, in particular all embodiments, the system is designed to maintain a positivemetacentric height, which further contributes to its overall stability and resistance to capsizing. It is not required, although it is preferred, to have an exact vertical alignment of the center of gravity and the center of buoyancy, and slight variations may be present. In some variants, the ballast weight may be controllable, allowing for dynamic adjustments to the position of the center of gravity of said weight ballast. This feature provides the ability to adapt to changing environmental conditions or to accommodate different load distributions on the floatable structure. The controllable nature of the ballast weight system may involve mechanical, hydraulic, or electronic mechanisms that allow for precise adjustments to be made as needed. Preferably, said ballast weight is actively controllable via one or more control units and one or more sensors. The sensors may be configured for measuring one or more variables, such as a water level in one or more compartments, for controlling the center of gravity via displacement of the ballast weight based on said measurements. Further refinements of the ballast weight may comprise a liquid medium as the primary ballast material. In these configurations, the liquid medium is preferably contained within one or more compartments integrated into or forming the floatable body. The system may include at least one displacement element, such as a pump, which enables the transfer of the liquid medium between different compartments. This capability allows for fine-tuned control over the center of gravity of the entire structure. By redistributing the liquid ballast, the system can respond to various factors such as changes in load distribution, wave conditions, or even intentional tilting for maintenance or operational purposes. The use of a liquid medium offers advantages in terms of ease of adjustment, smooth operation, and the ability to make precise, smooth incremental changes to the structure's balance and orientation. This sophisticated ballast weight contributes significantly to the overall stability, safety, and versatility of the floatable coastal system, allowing it to adapt to a wide range of environmental conditions and operational requirements. The ballast weight may comprise a mechanism to control the ballast weight in response to changes in load distribution on the floatable body. For example, when the wave barrier is attached to the secondary side of the floatable body, the ballast weight mechanism counterbalances this additional weight to maintain equilibrium and stability of the floatable body.In some embodiments, the floatable coastal system comprises a mooring structure that is at least partially formed by a recess in the floatable body. This recess is configured for receiving a part of a mooring pile. This provides a more secure and integrated anchoring point for the floatable coastal system. The recess may be shaped and sized to accommodate various mooring pile designs, allowing for flexibility in installation and compatibility with different marine environments.
[0023] Preferably, the mooring recess is substantially U-shaped. The base may be rounded and / or squared. This integrated approach to mooring can enhance the overall structural integrity of the system while minimizing external protrusions that might interfere with the aesthetic or functional aspects of the coastal area.
[0024] Preferably, the mooring recess is provided on the secondary side of the floatable body. The mooring structure may also comprise at least one mooring connector that is configured to be releasably connected to the floatable body, particularly to the mooring structure itself. This mooring connector is configured to at least partially enclose a mooring pile. This allows for creating a secure connection between the floatable body and the fixed mooring pile. When in a coupled condition, to the floatable body that is, the mooring connector is configured to restrict horizontal movement of the floatable body relative to the mooring pile. This feature is beneficial for maintaining the position of the coastal system and preventing drift or excessive lateral movement due to waves, currents, or wind. Preferably, while restricting aforementioned horizontal movement, the mooring connector is configured to allow vertical movement of the floatable body relative to the mooring pile. This vertical freedom is beneficial for accommodating tidal changes, water level fluctuations, and wave action, in the vertical direction ensuring that the floatable coastal system can rise and fall with the water level while maintaining its horizontal position. The ability to move vertically also helps to reduce stress on the structure during varying water conditions. Additionally, after the pile is connected to the floatable body, the connector allows vertical motion. The connector at least partially fills the mooring structure to prevent access to the recesses in the floatable body, reducing the risk of accidents. Additionally, the mooring connector may be configured to releasably co-act with a part of the mooring structure with respect to a mooring pile. This allows for easier installation, maintenance, and potential relocation of the floatable coastal system. The releasable nature of the connector provides flexibility in adjusting the system's position or temporarily detaching it if necessary for e.g., maintenance, while stillensuring a secure and stable mooring when engaged. This design approach combines the benefits of a robust mooring system with the adaptability required for a dynamic marine environment, contributing to the overall functionality and longevity of the floatable coastal system.
[0025] In some embodiments, the mooring connector of the floatable coastal system comprises a plurality of receiving spaces configured to co-act with a corresponding set of protruding elements on the floatable body, particularly on the mooring structure. When in a coupled condition, this arrangement of receiving spaces and protruding elements is configured to mutually restrict horizontal movement of the mooring connector relative to the floatable body. The horizontal obstruction allows to maintain the stability and position of the coastal system. The arrangement of receiving spaces and protruding element allows for vertical movement of the mooring connector and / or floatable body relative to the mooring pile. This vertical freedom is preferred for accommodating tidal changes and wave action, ensuring the system can adapt to varying water levels. Although it is described that the receiving spaces are arranged on the connector and the protruding elements onto the floatable body, the inverse solution is also imaginable and not excluded. The mooring connector may be configured to substantially entirely enclose a mooring pile when in a coupled condition. This comprehensive enclosure can prevent movement of the mooring pile in substantially all horizontal directions.
[0026] In certain configurations, the floatable body, particularly the mooring structure, may comprise at least one locking member. This locking member is configured to be releasably coupled to the floatable body, specifically to the mooring structure. When in a coupled condition, the locking member defines an opening that accommodates, and in some cases entirely encloses, the mooring connector. The locking member may essentially lock the mooring connector in place, when in coupled condition. This feature adds an extra layer of security to the mooring system, potentially enhancing its stability and reliability. The releasable nature of the locking member allows for flexibility in installation, maintenance, and system reconfiguration. It may also facilitate easier engagement and disengagement of the mooring system, enabling efficient adjustments or maintenance while ensuring robust security when engaged. The locking member may be essentially moved between a locking position, in which the locking member defines the opening foraccommodating the mooring connector and an unlocking position, in which the locking member leaves the recess in the floatable body at least partially unobstructed for allowing access or passage of a mooring pile. The locking member may be formed by rigid material, such as concrete and / or steel. This prevents that the locking member is urged out of the locking position due to upwardly directed forces of the sea or ocean or lake.
[0027] In some configurations of the floatable coastal system, at least one mooring connector may be composed of two or more connector segments. Each of these segments is configured to enclose a part of a mooring pile. This segmented design can offer several advantages. It may allow for easier installation and maintenance of the mooring connector, as individual segments could potentially be replaced or serviced without disturbing the entire connector. The segmented structure might also provide flexibility in accommodating different sizes or shapes of mooring piles, enhancing the system's adaptability to various installation environments.
[0028] Additionally, this design could facilitate the distribution of forces more evenly around the mooring pile, potentially reducing wear and improving the longevity of both the connector and the pile.
[0029] The mooring connector may incorporate one or more resilient shock absorbing materials on at least one side facing towards the floatable body, particularly the mooring structure. This shock absorbing material, which could be in the form of a fender or the like, serves multiple purposes. It can help mitigate the impact of wave action and other dynamic forces acting between the floatable body and the mooring system, reducing stress on both components. The resilient material may also help to dampen noise and vibration, potentially improving comfort for users of the coastal system. In some cases, this shock absorbing layer could act as a protective barrier, preventing direct contact between the mooring connector and the floatable body, thus reducing wear and extending the lifespan of both components. The use of such materials can contribute to the overall stability and durability of the mooring system, enhancing its performance in various sea conditions and potentially reducing maintenance requirements overtime. Especially since the shock absorbing material is arranged on an exterior side of the mooring connector it allows for easy replacement thereof once it is worn out. In addition to the shock absorbers on the outer part, rollers may be provided between the interface of themooring pile and a portion of the connector. In particular, between the part of the connector facing the mooring pile and the mooring pile itself. These rollers may facilitate smoother vertical motion, reducing noise and minimizing damage to the elements. The mooring connector may be easily removed, temporarily, in order to replace the shock absorbing material arranged thereon, without the need to entirely unfasten the floatable system from the mooring pile.
[0030] The wave barrier in the floatable coastal system may in some embodiments be formed by a permeable structure comprising a grid of interconnected profiles. The wave barrier may be suspended in water entirely. The grid structure may also be composed out of a plurality of mooring lines extending from the floatable body to a location of the bed of the water body. The mooring lines are situated at a distance such that the porosity of all combined mooring lines is between 35% and 85%, particularly 50%. Throughout this document reference can be made to permeability and porosity, which is expressed in %, with this the same is meant. The grid structure allows for a balance between wave attenuation and water flow, with the porosity of the wave barrier preferably situated between 35% to 85%, and more preferably approximately 50%. This porosity may be achieved by forming a width of the gaps between the profiles to be approximately equal to the width of the profiles themselves, which are determined based on load conditions, primarily wave forces. For example, a wave barrier measuring 67 meters in length and 15.6 meters in height with tube profiles of 40 by 40 cm and set at a 45-degree angle would require 84 vertical profiles and only 5 horizontal profiles to achieve 50% porosity. The structure of the wave barrier may feature a greater number of profiles in the vertical direction compared to the horizontal direction. For instance, there may be 84, 130, or even 170 profiles extending vertically, while only 5 or 10 or 15 profiles may be present in the horizontal direction. In this context, "horizontal" is understood to be substantially parallel to the secondary side of the floatable body, while "vertical" extends perpendicular to this. The vertical profiles may be positioned at intervals ranging from approximately 0.2m to 0.8m apart, with a preferred spacing of around 0.4m to maintain approximately 50% porosity. This configuration of profiles, which could be in the form of tubes or similar shapes, creates a grid-like structure that can effectively dissipate wave energy while allowing for some water movement. The wave barrier permeable structure allows for minimal disturbance to marine habitats, as it permits the passage of water, nutrients, and smaller marine organisms. Thegrid-like arrangement of profiles can effectively attenuate wave energy while still allowing for natural water circulation, potentially maintaining local ecosystem balance. Additionally, the spacing between vertical profiles may provide protection from larger sea animals, creating a safety buffer for the coastal area without completely blocking the movement of water and smaller organisms. This design could offer a compromise between human use and marine life preservation, allowing for the coexistence of coastal activities and local marine ecosystems. The adjustable permeability, achieved through varying the number and spacing of profiles, may enable customization of the barrier's performance to suit specific local conditions, balancing wave protection with environmental considerations.
[0031] Furthermore, the open structure, particularly when free from seabed connections, may reduce the overall weight and material requirements compared to solid barriers, potentially lowering construction and maintenance costs while still providing effective coastal protection. Preferably, the wave barrier is essentially free from sea bedding connections.
[0032] In some embodiments the wave barrier may be downwardly inclined with respect to a horizontal level in a direction away from floatable body, in particular the secondary side, wherein the wave barrier is inclined at an angle between 30 and 60 degrees, preferably 45 degrees. The angled configuration may offer several advantages in wave attenuation and system performance. The downward slope could help to gradually dissipate wave energy as waves encounter the barrier, potentially reducing the impact force on the structure. This design may also assist in redirecting wave motion downward and away from the coastal area, further enhancing protection for the floatable body and its users. The specific angle chosen within the 30 to 60 degree range could be optimized based on local wave patterns, water depth, and desired level of protection, allowing for customization to suit various coastal environments and requirements.
[0033] The wave barrier in this floatable coastal system may be coupled, or designed to be coupled, to the secondary side of the floatable body, with a preference for attachment at the distal or farthest end of the secondary side. This configuration could allow for optimal positioning of the wave barrier to protect the coastal area created on the floatable body. To facilitate the installation of the wave barrier to the floatable body the wave barrier may be designed to be self-floating at the desiredangle (particularly between 30 to 60 degrees). A ballast weight may to this end be incorporated at the profiles, particularly the bottom profiles, and floaters may be added along the top end of the wave barrier until it reaches the equilibrium at the desired angle. This allows the wave barrier to be towed to the installation location over the water. Once towed to the location and connected to the floatable body, floaters can be removed. At this point, the ballast of the floating body may be adjusted to compensate for the additional weight of the wave barrier at the edge, ensuring that the overall balance and stability of the floating body are maintained. The coupling of the wave barrier to the secondary side may be achieved through one or more intermediate structures. These intermediate structures could serve to position the wave barrier at a specific distance from the secondary end of the floatable body. Such a design may offer several potential benefits and flexibility in the system's configuration. The use of intermediate structures could allow for adjustable positioning of the wave barrier, enabling customization of the height and / or distance with respect to the secondary side based on local conditions or changing requirements. This distance between the wave barrier and the floatable body may create a buffer zone, potentially reducing the direct impact of waves on the main structure. The intermediate structures could also provide additional stability to the wave barrier, distributing forces more evenly. Furthermore, this configuration may allow for easier maintenance or replacement of the wave barrier without affecting the main floatable body.
[0034] The wave barrier in this floatable coastal system may be designed such that a substantial portion of it remains submerged during use, with the lower end preferably having a gap above the seabed to avoid contact. The gap is preferred to be adjusted to the lowest tide level such that contact with the seabed is also avoided at low tide. This submerged portion could preferably constitute at least 75% of the wave barrier, more preferably at least 85% or even 95% submerged. Such a design may offer several potential advantages in terms of wave attenuation and system performance. A largely submerged wave barrier could effectively interact with underwater wave energy, potentially dissipating wave force before it reaches the surface. This configuration may also help maintain a more aesthetically pleasing coastal environment by minimizing visual obstruction above the water line. The submerged design could also reduce the impact of wind forces on the structure, potentially enhancing its stability and longevity. By not interfering with theseabed, the wave barrier minimizes the risk of sediment accumulation and erosion around the structure.
[0035] In some embodiments the distance between the primary and secondary sides and / or the overall width of the floatable body may range from approximately 40 meters to approximately 100 meters, preferably around 70, preferably 67 meters. Such dimensional specifications may offer various benefits and functionalities to the system. This range of sizes could accommodate different coastal environments and usage requirements, allowing for flexibility in implementation. A width of 40 to 100 meters may provide sufficient space for creating a substantial coastal area, potentially including features like a beach, recreational spaces, or even small structures. These dimensions could enable the system to be scaled and modularly connected with other similar units, potentially allowing for the creation of larger coastal areas or even floating communities.
[0036] The floatable body of the floatable coastal system may comprise a pair of tertiary sides. These tertiary sides may extend between the primary and secondary sides, potentially forming the lateral boundaries of the structure. At least one of these tertiary sides, and preferably both, may be configured for coupling with adjacent floatable coastal systems, in particular an adjacent floatable body. The ability to couple multiple floatable coastal systems together may allow for the creation of larger, modular coastal areas, potentially enabling the expansion of floating developments as needed. This coupling capability could provide flexibility in the overall layout and size of floating coastal installations, allowing for customization based on specific site requirements or changing needs. The connection between adjacent systems may enhance overall stability by distributing wave forces and other environmental loads across a larger structure. Additionally, this design could facilitate the creation of continuous coastal areas, potentially including extended beaches or promenades spanning multiple connected units.
[0037] The invention furthermore provides a floatable body for use in a floatable coastal system, in particular the floatable coastal system according to any of the preceding claims, the floatable body having a predefined buoyancy, further comprising a primary side, said primary side configured to be connected to an adjacent floatable structure, and at least a secondary side, preferably opposite to the primary side, anupper surface, wherein at least during use said upper surface is at least partially exposed above a water surface level, and a bottom surface, optionally at least one beach area arranged on at least a portion of the upper surface, in particular an exposed part of the upper surface, optionally at least one recess arranged in a portion of the floatable body, preferably along a perimeter of the floatable body, said recess configured for receiving part of a mooring pile. The floatable body described may offer the same advantages and functionalities as the floatable coastal system previously discussed. The floatable body may also be applied independently in combination with one or more aspects of the mooring structure as defined throughout this application. The floatable body is configured for improved mooring. In case the mooring system is provided independent from the wave barrier to provide a floatable body for improved mooring, the upper surface of the floatable body does not need to be inclined. In this respect the floatable body may comprise at least one mooring structure, wherein preferably part of said mooring structure is formed by and / or provided onto the floatable body for mooring the floatable body to a fixed reference, such as a mooring pile; It is imaginable that the floatable body comprises a plurality of spaced apart mooring structures. Additional aspects, such as those related to the at least one mooring connector that is configured to be releasably connected to the floatable body, particularly to the mooring structure itself, may also be provided in combination with other aspects disclosed of the mooring structure. This mooring connector is configured to at least partially enclose a mooring pile. For example, the locking members, shock absorbers, and the like may be applied.
[0038] The present invention will hereinafter be further elucidated based on the following non-limitative figures, wherein:
[0039] - FIG. 1 illustrates a perspective view of a floatable coastal system, according to aspects of the present disclosure;
[0040] - FIG. 2 shows the floatable coastal system in different configurations of use; - FIG. 3 depicts a section perspective view of the floatable body according to an embodiment;
[0041] - FIG. 4 shows a detailed view of a mooring structure for the floatable coastal system, according to aspects of the present disclosure;- FIG. 5 illustrates a cutaway drawing of a part of the floatable coastal system, according to an embodiment; and
[0042] - FIG. 6 depicts a side view of the floatable coastal system according to aspects of the present disclosure.
[0043] The following description sets forth exemplary aspects of the present disclosure based on the non-limitative embodiments depicted in the figures. It should be recognized, however, that such description is not intended as a limitation on the scope of the present disclosure. Rather, the description also encompasses combinations and modifications to those exemplary aspects described herein.
[0044] Referring to FIG. 1 , the floatable coastal system 100 according to this embodiment comprises at least one floatable body 103. The floatable body 103 has a predefined buoyancy, allowing it to float on a body of water, such as sea or ocean. The floatable body 103 comprises a primary side 101 and a secondary side 102 (not fully visible in Figure 1 , but visible in Figure 3). The primary side 101 and secondary side 102 are coupled through two tertiary sides 127. The length of the tertiary sides 127 may be varied according to the need of the coastal system 100. The primary side 101 is configured to be connected to an adjacent floatable structure, such as another floatable body or a larger floatable structure like a floating city. This connection can be achieved through various means, such as mechanical fasteners, welding, or other suitable connection methods. The floatable body 103 also includes an upper surface 104. During use, at least a portion 111 of this upper surface 104 is exposed above the water surface level. This exposed portion 111 of the upper surface 104 can be utilized in various ways. In some aspects, an optional beach area 105 is arranged on at least a portion of the upper surface 104. In this regard, especially a sand-like beach area 105 is optional, which may alternatively be formed by a sloped surface without sand. This beach area 105 can provide a coastal environment on the floatable structure, offering recreational space for residents or visitors. Another portion 110 of the floatable body 103 is submerged, which may provide a recreational water area and increased wave attenuation. The floatable coastal system 100 of the depicted embodiment also comprises at least one mooring structure 106. Part of this mooring structure 106 is formed by and / or provided onto the floatable body 103. The mooring structure 106 is used for mooring the floatable body 103 to a fixed reference, such as a mooring pile 107.This mooring arrangement helps to stabilize the floatable body 103 in the water, preventing it from drifting due to currents, wind, or other (horizontal) forces. In some cases, the floatable coastal system 100 may also include a wave barrier 108. This wave barrier 108 can be coupled, or configured to be coupled, to the floatable body 103. Preferably, the wave barrier 108 is coupled to the secondary side 102 of the floatable body 103. The wave barrier 108 is partially fluidly permeable, allowing water to flow through while also providing protection against wave action. The permeability of the wave barrier 108 in this embodiment is achieved through a grid of profiles 123, 124. The vertical profiles 124 are situated at an angle, which is preferably approximately 45 degrees. This angle turned out optimal for most scenarios. Due to the fact that a substantial portion of the wave barrier 108 is submerged, it helps to attenuate waves without obstructing the appearance of the wave barrier. This wave barrier therefore can help to reduce the impact of waves on the floatable body 103, enhancing the stability and comfort of the floatable structure to which the coastal system is connected.
[0045] FIG. 2 shows different ways in which the coastal system 100 is used. The floatable coastal system 100 is configured to protect floating coastal structures or coastal regions. The system 100 may be coupled directly to the floating structure, or via a coupling such that the coastal structure 100 is at a distance from the floating structure, which is visualized in figure 2a and 2b respectively. In figure 2a the configuration is shown wherein four coastal system 100 as described in this document are directly coupled to the floating 135 structure or floating city 135. The connection 130 between the coastal systems 100 and the floating structure or city 135 is preferably rigid. The four coastal systems 100 are connected to each other in series 136, to provide the protective coastal system 100 along substantially the entire length of the floating structure or city 135. Figure 2b indicates the floatable systems 100 are arranged at a distance 131 from the floating structure or city 135. In this embodiment, the four coastal systems 100 are coupled to the floating structure or city 135 via six different bridges 133. The coastal systems 100 can be either connected or moored independently from the floating 135, providing a buffer zone to absorb dynamic loads from waves and current. In all configurations, bridges 134 link the floatable systems to the coastal city on land. These bridges may be flexible to accommodate dynamic loads such as waves, currents, and tidal variations.Referring to FIG. 3, the floatable body 103 of the floatable coastal system 100 is at least partially formed by a hollow structure. This hollow structure may be composed of a plurality of interconnected hollow segments and / or compartments 109. These hollow segments and compartments 109 can contribute to the buoyancy of the floatable body 103, helping it to float on the water surface. In some aspects, these hollow segments and compartments may also serve as storage spaces or utility conduits, providing additional functionality to the floatable body 103. The floatable body 103 includes a primary side 101 and a secondary side 102. The primary side 101 is configured to be connected to an adjacent floatable structure, such as another floatable body or a larger floatable structure like a floating city. The secondary side 102, on the other hand, is preferably opposite to the primary side 101. The height of the floatable body 103 on the primary side 101 is larger than the height of the floatable body 103 on the secondary side 102. This difference in height creates an inclined orientation of the upper surface 104 of the floatable body 103 when it is in its upright position. In this case, the upright position is when the bottom surface is substantially parallel to the mean water surface and when the surfaces 101 and 102 are vertical (perpendicular to the mean water surfacej.The upper surface 104 of the floatable body 103 includes a beach area 105. This beach area 105 is arranged on at least a portion of the upper surface 104, providing a coastal environment on the floatable structure. The beach area 105 may be composed of natural materials such as sand, pebbles, or a combination thereof, and may also include amenities such as beach chairs, umbrellas, or recreational equipment. The floatable body 103 also includes a retaining barrier 112. This retaining barrier 112 protrudes at least in the vertical direction with respect to the upper surface 104 of the floatable body 103. The retaining barrier 112 is configured to retain beach material, such as sand, within the beach area 105. This helps to maintain the integrity of the beach area 105, preventing the beach material from being washed away by waves or wind. A part of the upper surface 104 is formed by a flat upper surface portion 104a, which in this embodiment forms a sidewalk for pedestrians.
[0046] Referring to FIG. 4, the floatable coastal system 100 comprises a mooring structure 106 that is at least partially formed by and / or provided onto the floatable body 103. The mooring structure 106 is used for mooring the floatable body 103 to a fixed reference, such as a mooring pile 107 in this embodiment. Although in thisembodiment only a single mooring structure is shown, it is imaginable that the floatable coastal system 100 comprises a plurality of spaced apart mooring structures 106. This mooring arrangement helps to stabilize the floatable body 103 in the water, preventing it from drifting due to currents, wind, or other forces. In some aspects, the mooring structure 106 is at least partially formed by a recess 115 in the floatable body 103. This way, the mooring structure 106 does not protrude from the secondary side 102. The recess 115 is configured for receiving part of a mooring pile 107. The recess 115 may be formed in the floatable body 103 during its manufacturing process, or it may be created after the floatable body 103 has been manufactured. The recess 115 may be of a size and shape that is complementary to the mooring pile 107, allowing the mooring pile 107 to be securely received within the recess 115. In order to secure the floatable body 103 with respect to the mooring pile 107 the mooring structure 106 also comprises at least one mooring connector 116. This mooring connector 116 is configured to be releasably connected to the floatable body 103, and it encloses a mooring pile 107. The mooring connector 116 may be a separate component that is attached to the floatable body 103, or it may be an integral part of the floatable body 103. The mooring connector 116 may be made of a durable material, such as steel, to withstand the harsh marine environment. The mooring connector 116 in this embodiment includes a plurality of receiving spaces 117. These receiving spaces 117 are configured to co-act with a plurality of protruding elements 118 of the floatable body 103, which are provided in the perimeter of the recess 115. In a coupled condition, the receiving spaces 117 and protruding elements 118 work together to restrict at least a horizontal movement of the mooring connector 116 relative to the floatable body 103. This helps to maintain the position of the floatable body 103 since the mooring connector 116 encloses the mooring pile 117. In the embodiment depicted in this figure, the mooring connector 116 is composed out of two identical segments 116, each enclosing part of the pile 117. This provides a secure connection between the mooring pile 107 and the floatable body 103, helping to stabilize the floatable body 103 in the water. The mooring structure 106 may comprise a locking member 119 that can be engaged with a protruding member 120 on the floatable body 103 to secure the mooring connector 116 in place. The locking member 119 thus is configured to lock the mooring connector 116 in place. In some aspects, at least one side of the mooring connector 116 facing towards the floatable body 103 is provided with one or more resilient shockabsorbing patches 121 . This shock absorbing material 121 may be a rubber, a foam, a spring, or any other suitable material or device capable of absorbing impact forces. The shock absorbing material 121 helps to protect the floatable body 103 and the mooring connector 116 from damage due to impact forces, such as those that may be caused by waves, wind, or the movement of the floatable body 103 relative to the mooring pile 107. The location of the shock absorbing material 121 on the exterior side of the mooring connector 116 allows for increased ease of maintenance. Additionally, roller bearings 122 are provided between the interface of the mooring pile 107 and the side of the connector 116 facing said mooring pile 107. These roller bearings 122 may facilitate a smoother vertical motion, reducing noise and minimizing damage to the elements. The mooring structure 106 and the upper part of the mooring pile 107 may be covered by a cover element 128 to avoid people coming in contact with interfaces such as the roller bearings 122 and hurt themselves due to the vertical motion. The mooring connector 116 may easily be temporarily removed from the mooring structure 106 to provide the required maintenance to the material 121 without the need to remove the floating system 100 from the mooring pile 107.
[0047] Referring to FIG. 5, an interior part of the floatable body 103 of the floatable coastal system 100 is shown. The floatable body 103 comprises a ballast weight 113. The ballast weight 113 in this embodiment is formed by a liquid medium, such as water, which is accommodated in one or more compartments 109 of the floatable body 103. These compartments 109, also referred to as ballast tanks 109, can be filled with water to increase the weight of the floatable body 103 locally and change its center of gravity. The amount of water in the ballast tanks can be adjusted as needed to maintain the balance of the floatable body 103. The ballast weight 113 is positioned (i.e., distributed over the plurality of compartments 109) such that the center of gravity and the center of buoyancy of the floatable body 103 can be mutually aligned, preferably vertically. This alignment helps to maintain the stability of the floatable body 103, ensuring that it remains upright and balanced in the water. In the embodiment shown, the ballast weight 113 is a controllable ballast weight, meaning that the position of its center of gravity can be controlled, preferably actively. The position of the ballast weight 113 may be controlled through a control unit 114. This allows for fine-tuning of the balance of the floatable body 103 according to the environmental needs, helping to optimize its stability undervarious conditions. For example, the position of the center of gravity of the ballast weight 113 can be adjusted to compensate for changes in the distribution of weight on the floatable body 103, such as when additional structures are added to the floatable body 103 or when the load on the floatable body 103 changes due to environmental loads. In some cases, the floatable body 103 includes a displacement element, such as a pump, for displacing the liquid medium over the one or more compartments. This allows for precise control over the distribution of the ballast weight 113 within the floatable body 103. By pumping water in or out of the ballast tanks, the position of the center of gravity of the ballast weight 113 can be adjusted to maintain the balance of the floatable body 103.
[0048] Referring to FIG. 6, the floatable body 103 of the floatable coastal system 100 may feature various configurations of the upper surface 104. In some aspects, a part of the upper surface 104 may be flat, as represented by the flat upper surface 104a forming e.g., a sidewalk for pedestrians or a cycling lane. In other aspects, a part of the upper surface 104 may be stepped, as represented by the stepped upper surface 104b. This configuration may be used to create a tiered beach area 105, providing multiple levels for recreational activities or other uses. The stepped configuration may also help to manage water runoff, directing it away from structures or other areas on the floatable body 103. In yet other aspects, part of the upper surface 104 may be inclined, as represented by the inclined upper surface 104c. This configuration may be particularly suitable for the beach area 105, creating a sloping surface that leads down to the water. The inclined upper surface 104c may also help to manage water runoff, directing it towards the water rather than pooling on the floatable body 103. The inclined portion 104c extends through the water surface to the submerged portion 110 of the floatable body 103. The wave barrier 108 is coupled, or configured to be coupled, to the secondary side 102 of the floatable body 103. The wave barrier 108 is formed by a permeable structure comprising a grid of interconnected profiles 123, 124, such as horizontal profiles 123 and vertical profiles 124. The porosity of the wave barrier 108 is situated between 35% and 85%, preferably approximately 50%. This allows water to flow through the wave barrier 108 while also providing protection against wave action. The wave barrier 108 is downwardly inclined with respect to a horizontal level in a direction away from the floatable body 103, as represented by the inclination angle 125. The inclination angle 125 is between 30 and 60 degrees, preferably 45degrees. This inclination helps to dissipate wave energy, reducing the impact of waves on the floatable body 103 and enhancing the stability of the floatable coastal system 100. As it can be seen from the drawing, a substantial portion, preferably at least 75%, more preferably at least 85% or 95%, of the wave barrier 108 is submerged, at least during use. This further enhances the wave-dissipating properties of the wave barrier 108, as the submerged portion interacts directly with incoming waves. In some cases, the wave barrier 108 may be coupled to the floatable body 103 via one or more intermediate structures 126. These intermediate structures 126 can be used to position the wave barrier 108 at a distance from the secondary side 102 of the floatable body 103, allowing for adjustments in the positioning of the wave barrier 108 based on the specific requirements of the floatable structure. This allows to attenuate waves prior to reaching the secondary side 102 of the floatable system 100. Additionally, a protection net 129 may be coupled to the floatable body 103 and the wave barrier 108, in particular a nonsubmerged part thereof. The protection net 129 allows to restrict access from the beach area 104c to the wave barrier 108 and the intermediate structures 126. Due to the interaction with the waves and the dissipation of energy, the region between the profiles 123, 124 experiences high turbulence, making it beneficial to restrict accessibility for the safety of swimmers and divers using the beach area of the floatable body 103.
[0049] The verb 'comprise' and its conjugations as used in this patent document are understood to mean not only 'comprise', but to also include the expressions 'contain', 'substantially contain', 'formed by' and conjugations thereof.
Claims
Claims1. Floatable coastal system for providing wave protection to a coastal area to a portion, in particular a perimeter, of a floatable structure, such as a floatable building and / or city, comprising:at least one floatable body having a predefined buoyancy, the floatable body comprising;o a primary side, wherein said primary side is configured to be connected to an adjacent floatable structure, and a secondary side, preferably opposite to the primary side,o an upper surface, wherein at least during use, said upper surface is at least partially exposed above a water surface level, wherein preferably a beach area is arranged on or formed by at least a portion of the upper surface, in particular an exposed portion of the upper surface, of said floatable body;at least one mooring structure, wherein part of said mooring structure is formed by and / or provided onto the floatable body for mooring the floatable body to a fixed reference, such as a mooring pile; andat least one partially fluidly permeable wave barrier, wherein said wave barrier is coupled, or configured to be coupled, to the floatable body, preferably to the secondary side of the floatable body.
2. Floatable coastal system according to claim 1 , wherein said floatable body is at least partially formed by a hollow structure.
3. Floatable coastal system according to claim 2, wherein the floatable body is composed of a plurality of interconnected hollow segments and / or compartments.
4. Floatable coastal system according to any of the preceding claims, wherein a height of the floatable body on the primary side is larger than the height of the floatable body on the secondary side.
5. Floatable coastal system according to claim 4, wherein at least a part of the upper surface of the floatable body is downwardly inclined from the primary side towards the secondary side.
6. Floatable coastal system according to any of the preceding claims, wherein at least a portion of the floatable body, in particular a portion on the secondary side, is submerged, at least during use.
7. Floatable coastal system according to any of the preceding claims, wherein the floatable body comprises at least one retaining barrier, wherein said retaining barrier protrudes at least in vertical direction with respect to the upper surface of the floatable body and is configured to retain beach material, such as sand.
8. Floatable coastal system according to any of the preceding claims, wherein the floatable body comprises at least one ballast weight, wherein the ballast weight is positioned such that the center of gravity and the center of buoyancy of the floatable body are mutually vertically aligned, preferably wherein a metacentric height is above zero.
9. Floatable coastal system according to claim 8, wherein the ballast weight is a controllable ballast weight, wherein at least a position of a center of gravity of the ballast weight is controllable.
10. Floatable coastal system according to claim 9, wherein the ballast weight is formed by liquid medium, wherein said liquid medium is accommodated in one or more compartments of the floatable body, further comprising at least one displacement element, such as a pump, for displacing the liquid medium over the one or more compartments for controlling the center of gravity.
11. Floatable coastal system according to any of the preceding claims, wherein the mooring structure is at least partially formed by a recess in the floatable body, said recess configured for receiving part of a mooring pile.
12. Floatable coastal system according to any of the preceding claims, wherein the mooring structure comprises at least one mooring connector configured to be releasably connected to the floatable body, in particular the mooring structure, and at least partially enclosing a mooring pile, wherein the mooring connector, in coupled condition, is configured for restricting at least one horizontal movement ofthe floatable body relative to a mooring pile and allowing at least one vertical movement of the floatable body relative to the mooring pile.
13. Floatable coastal system according to claim 12, wherein the mooring connector comprises a plurality of receiving spaces configured to co-act with a plurality of protruding elements of the floatable body, in particular the mooring structure, wherein in a coupled condition, the receiving spaces and protruding element restrict at least a horizontal movement of the mooring connector relative to the floatable body and to allow a vertical movement of the mooring connector and / or floatable body relative to a mooring pile.
14. Floatable coastal system according to claim 12 or 13, wherein the mooring connector, in a coupled condition, is configured to substantially entirely enclose a mooring pile.
15. Floatable coastal system according to one of claims 12-14, wherein the floatable body, in particular the mooring structure, further comprises at least one locking member, wherein said locking member is configured to be releasably coupled to the floatable body, in particular the mooring structure, wherein in a coupled condition the locking member defines an opening for accommodating, in particular enclosing, the at least one mooring connector.
16. Floatable coastal system according to any one of claims 12-15, wherein at least one mooring connector comprises two or more connector segments, each for enclosing a part of a mooring pile.
17. Floatable coastal system according to any one of claims 12-16, wherein at least one side of the mooring connector facing towards the floatable body, in particular the mooring structure, is provided with one or more resilient shock absorbing material, such as a fender.
18. Floatable coastal system according to any of the preceding claims, wherein the wave barrier is formed by a permeable structure comprising a grid of interconnected profiles, preferably wherein the porosity of the wave barrier is situated between 35% and 85%, preferably approximately 50%.
19. Floatable coastal system according to any of the preceding claims, wherein the wave barrier is downwardly inclined with respect to a horizontal level in a direction away from floatable body, in particular the secondary side, wherein the wave barrier is inclined at an angle between 30 and 60 degrees, preferably 45 degrees.
20. Floatable coastal system according to any of the preceding claims, wherein the wave barrier is coupled, or configured to be coupled, to the secondary side of the floatable body, preferably a distal end.
21. Floatable coastal system of claim 20, wherein the wave barrier is coupled via one or more intermediate structures, wherein the intermediate structure is configured for positioning the wave barrier at a distance with respect to the secondary end.
22. Floatable coastal system according to any of the preceding claims, wherein a substantial portion, preferably at least 75%, more preferably at least 85% or 95%, of the wave barrier is submerged, at least during use.
23. Floatable coastal system according to any of the preceding claims, wherein a distance between the primary side and the secondary side and / or a width is situated between approximately 40m and 100m, preferably approximately 70m.
24. Floatable coastal system according to any of the preceding claims, wherein the floatable body comprises a pair of tertiary sides, each tertiary side extending between the primary and secondary side, wherein at least one tertiary side, preferably both tertiary sides, is configured to be coupled to an adjacent floatable coastal system.
25. A floatable body for use in a floatable coastal system, in particular the floatable coastal system according to any of the preceding claims, the floatable body having a predefined buoyancy, further comprising:o a primary side, said primary side configured to be connected to an adjacent floatable structure, and at least a secondary side, preferably opposite to the primary side,o an upper surface, wherein at least during use said upper surface is at least partially exposed above a water surface level,o preferably, at least one beach area arranged on or formed by at least a portion of the upper surface, in particular an exposed part of the upper surface, of said floatable bodyo at least one recess arranged in a portion of the floatable body, preferably along a perimeter of the floatable body, said recess configured for receiving part of a mooring pile.