Modular semi-submerged structure and method of its fabrication

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to modular floating structures for various types of installations. Modular semi-submerged structure 1 comprises platform to accommodate various structures nearby sea shore or sides of lakes and rivers. Said structure 1 comprises two or more interconnected semi-submerged modules 10, 10′, 10′′. Each of said modules includes deck 11 located above water level under operating conditions to confine a part of said platform. Carcass 12 is arranged above said deck and comprises inside first watertight compartments that double as ballast. It is submerged in operation. Multiple columns 13 integrating structurally said carcass with said deck and have inside second watertight compartments that double as ballast. Semi-submerged structure comprises supports 16 that integrate structurally the adjacent semi-submerged modules at the level of appropriate columns 13. Invention covers also the method of fabrication of described structure.

EFFECT: enhanced performances, higher reliability and manufacturability.

19 cl, 13 dwg

 

Scope

The present invention relates to a modular semi-submersible design and method of creating such a structure.

This modular semi-submersible design can be used to create platforms that can take on Board a tourist, residential, commercial, industrial or military installations close to the coast or in the waters of lakes or rivers and in inland open areas.

The level of technology

The lack of important areas of ecological or commercial importance, adjacent to seas or lakes, resulted in the floating search solutions applicable near the sea shore or the shallows, often in the open sea or at a distance from the ports or marinas. One example is construction in the area of river mouths, ports, or just a commercial Parking courts with logistics, energy, or even tourism functions.

Known solutions include floating pontoons that can be used in the waters of harbours and enclosed water areas. Such solutions known type, however, is limited by the fact that they are solutions with limited useful surface, can only be used in protected waters of harbors and do not always comply with the increasingly stringent requirements of coastal and port regulations provide�of human security and the protection of the marine environment.

Brief description of the invention

The purpose of the present invention is to propose a modular semi-submersible structure, which provides the ability to easily increase the usable surface in terms of space and capacity with regard to the requirements that may appear or be changed in the future.

Another objective of the present invention is to propose a modular semi-submersible design that can be used in the marine environment, rendering a minimal impact, and which can withstand adverse sea conditions in open waters.

Next target of the present invention is to propose a modular semi-submersible design that provides a high level of comfort and safety on Board even in adverse sea conditions in open waters.

A further objective of the present invention is to propose a modular semi-submersible design that can easily be collected directly in the final mooring.

Another objective of the present invention is to propose a modular semi-submersible design, which can be collected simply and with little cost.

Brief description of the drawings

Technical characteristics of the invention corresponding to the above-mentioned purposes, is obvious from the content of the following formulas� of the invention, and advantages of the invention will be better understood from the following detailed description of the invention with reference to the accompanying description of the drawings one or more embodiments of the invention, given as non-limiting examples of the invention, on which is shown:

- Fig.1 is a perspective view from above of a preferred embodiment of a semi-submersible module forming structure proposed in the present invention,

- Fig.2 is a perspective view from below of a module shown in Fig.1,

- Fig.3 is a perspective view from above of the modular semi-submersible structure according to one of preferred embodiments of the invention, assembled from three modules, izabranih in Fig.3,

- Fig.4 is a perspective view from below of the design shown in Fig.3,

- Fig.5 and 7 - two sketches depicting a perspective view and a top view of the proposed in the invention of semi-submersible design with a tourist facility on Board,

- Fig.6 and 8 - two sketches depicting a perspective view and a top view of the semi-submersible structure shown in Fig.5 and 7, with an increased usable surface for increasing the size of tourist facilities on Board,

- Fig.9 is a side view shown in Fig.1 module partially in section, secured to the bottom using�th chains,

- Fig.10 and 11, two side-view shown in Fig.1 module broken in various floating configurations, respectively, in Fig.10 - with columns, a partially submerged for adverse sea conditions, and Fig.11 - with a fully submerged columns for favorable sea and weather conditions,

- Fig.12 is a schematic top view shown in Fig.1 module in the section plane passing through the skeleton of the module and

- Fig.13 is a schematic top view shown in Fig.3 design, which identified lattice connective structure located between decks three modules.

Detailed description of the invention

In the accompanying drawings of the proposed in the invention of modular semi-submersible design is generally indicated by the reference position 1. Modular semi-submersible design has a platform 2, on Board which can accommodate tourist, residential, commercial, industrial or military installations S sheer weight and size close to the coast or in the waters of lakes or rivers, as well as in open waters, as shown, for example, Fig.5, 6, 7 and 8.

Structures that can be installed on the platform 2 may be of any type, for example, hotel, entertainment, cultural, sports, industrial or military target, the object of the infrastructure�market for oil and gas, production of electricity from conventional and renewable sources, waste processing, signal transmission, environmental monitoring, information processing, the airport, the service courts, storage, etc.

Semi-submersible design 1 keep two or more semi-submersible module 10, 10', 10", structurally interconnected, as shown in Fig.3 and 4.

Each module 10, 10', 10" is:

deck 11, which in operation is located above the water level and limits the portion of the platform 2,

frame 12 which is located below deck and is provided with internal watertight compartments that perform the function of ballast, and in operation immersed in water, and

many of the columns 13, which structurally connect the frame 12 with the deck 11 and have within themselves the second watertight compartments 15, which acts as a ballast.

Semi-submersible design 1 has a console 16, which structurally connect adjacent semi-submersible modules 10, 10', 10" between each other, as shown in Fig.3 and 4.

Deck 11 of each module 10 preferably has a polygonal perimeter shape. Functionally deck 11 adjacent modules 10, 10', 10" are Board on Board sides of their perimeter, forming a continuous structure that restricts the semisubmersible platform 2 design. 1.

According to a preferred �the Ariant of the invention, shown in the accompanying drawings, deck module has a perimeter in the shape of a regular polygon, preferably a hexagon. Indeed, the hexagonal shape provides improved filling of the total usable space and a better distribution of the loads.

According to a preferred embodiment of the invention shown in Fig.3 and 4, the console 16 is structurally connect adjacent modules 10, 10', 10" each other on their respective columns 13.

Preferably the connecting console 16 is welded to the columns 13. In particular, the connection between the console and the column is accomplished by a mutual connection.

Connecting the console 16 preferably have a circular cross-section, as it provides great resistance to mechanical loads. Can also provide for other types of cross-section, such as polygonal, especially square or rectangular.

Adjacent modules 10, 10', 10" also predominantly structurally interconnected by their respective decks 11. In this case it is preferable to connect the console with columns 13 near the places where the column joins the skeleton, that is, as far as possible from the deck to ensure a better distribution of loads and to reduce the share of structures subjected to mechanical n� balanced loads.

In particular, the deck 11 of the module 10 has a box-like structure containing at least two sheet element, top and bottom, placed one above the other, and a plurality of connecting beams between them. Deck 11 of two adjacent modules are structurally interconnected at the level of the respective sheet elements, and the connecting beams.

Constructive connection between the parts may be made primarily by welding.

The connecting beams 17 of the deck module 11 are preferably in the form of a rectangular lattice.

According to a preferred embodiment of the invention shown in Fig.13, deck 11 of each module has a perimeter in the shape of a regular polygon (hexagon) and the connecting beams arranged in the form of the aforementioned rectangular grid, pass through the vertices of a hexagonal perimeter. The corresponding connecting beams adjacent to each other of the modules 10, 10' and 10" are connected together at the vertices of the polygonal perimeter of the deck, forming a single rectangular grid. This configuration facilitates the connection and provides a mostly isotropic behavior of the structure.

According to a not shown alternative embodiment implemented�I of the invention, the connecting beams of the deck 11 of the module 10 are diverging from the center of the deck beams.

As shown in the accompanying drawings, the frame 12 of each module is preferably made in the form of three-dimensional geometric ring mould, inside which holds the previously mentioned 14 watertight compartments.

Alternative according to a not shown in the drawings embodiment, the frame may be made of separate floating elements, each of which is connected to the deck by at least one column.

Donut skeleton is preferred because it allows better balance mass, maximizes the axial force created by the watertight compartments, provides weight loss and attaches to the frame and the entire module greater rigidity and resistance to mechanical loads.

As shown in Fig.2, frame 12 is smaller than deck 11 to provide the ability to build semi-submersible module even at the docks of limited size, and to ensure installation in the correct position connecting consoles 16 between the columns 13.

In particular, the frame 12 of ring shape in plan cross-section of polygonal shape, preferably the same as that of the deck 11. Preferably, the frame has a rectangular cross section, although it may include other cross-sectional shapes.

Column 13 mostly PR�astavliaut a box-shaped elements, having a cross-section is preferably polygonal or round shape.

Inside the columns are made of the previously mentioned second watertight compartments 15, which preferably occupy only a portion of the internal volume of the mentioned columns. A portion of the internal volume can be used as a useful space for current needs.

Column 13 is preferably arranged vertically to ensure a better distribution of the loads. In the case of an annular core with a polygonal cross-section in plan (as shown in Fig.1 and 2) columns set in the area of the vertices of the polygon in terms of frame 12.

Preferably all components of the module is made in the form of a tightly sealed casing components to prevent exposure to the marine environment and weather. In particular, box-shaped structure that forms the deck module 11 is closed from the sides of the closing plates, which connect the two flat element, upper and lower. These plates are missing on parts of the perimeter where the deck connects to the adjacent modules.

For example, semi-submersible module 10 used to create the proposed in the invention, the semi-submersible structure 1 has a hexagonal deck with a side length of about 29 km, the distance between the parallel sides of about 50 m and the distance between two vertices �Kolo 58 m. The deck has a height of about 2.5 m. usable area is about 2 100 m2. The annular frame has the shape of a hexagon (side about 23 m, the distance between the parallel sides of about 40 m) and a square cross section (height and width 7 m). There are 6 columns, one for each vertex, the height of each is about 12 m. In the frame has the first six watertight compartments with a total volume of about 4 900 m3in the columns there in the second six watertight compartments with a total volume of about 1 500 m3; the estimated mass of the module is about 2 000 t module Described above can be manufactured in places with an average level of logistics and engineering capabilities.

Each module preferably keep ballast system with water first and second watertight compartments 14, 15.

First of all ballast system includes one or more pumps to move water and delivery system piping that is connected to the first and second watertight compartments 14 and 15. It is preferable to maintain each compartment a separate pipeline. The energy required to perform the operations of emptying and filling of the water compartments is provided by the installed on-Board system of electricity generation.

Functionally, the ballast system can be used to change the fill level in�DOI watertight compartments and consequently change the position of the waterline of the module (10, 10', 10"). Filling the second watertight compartments 15 (i.e. compartments in the columns) in addition to the first compartments 14 (i.e., compartments, disposed in the frame) approximates the position of the waterline to the deck and as a consequence leads to more immersion module in water (see Fig.11). Emptying compartments, starting from the second compartments 15, removes the position of the waterline from the deck and consequently leads to less immersing the module in water (see Fig.10).

As explained below, the ability to change the position of the waterline separate semi-submersible module makes it easy to connect the individual modules to each other in the sea at the Assembly stage semi-submersible designs 1. In principle it is possible to bring the waterline close to the frame so that the column was above the water level, and to connect the consoles over the water surface to avoid technical difficulties with underwater welding.

It is preferable to provide a semi-submersible structure 1 is not shown in the drawings a centralized control system that controls the ballast systems of individual modules to ensure balanced charging and discharging watertight compartments of the modules and consequently ensure a balanced buoyancy semisubmersible designs 1. In particular, the filling and emptying compartments of takes the sequence specified.

The ability to change the position of the waterline of the entire modular semi-submersible design 1 allows you to adapt the design to the state of the sea.

In normal or good weather and sea conditions or in any other case, when mounted on the platform 2, the construction is not exposed, semi-submersible design 1 can be shipped virtually to the level of the platform 2. Thus, rising above the water part of the structure is reduced, which gives advantages in terms of impact on the environment and the landscape, and structures that are installed on the platform 2, can be brought closer to the surface of the water, which gives the benefits associated with the use of the water itself.

In poor weather or sea conditions or in case of any risk for installed on the platform 2 buildings, semi-submersible design 1 can be floated, rising above the water level, and at least partially Stripping column.

In the configuration with the waterline, passing near the skeleton, all the semi-submersible structure 1 can be moved using your own vehicle or be towed.

Mainly semi-submersible structure 1 may have one or more not shown in the drawings, the propulsion devices to move the design in the water, it can be installed permanently or con�.

Mainly semi-submersible structure 1 is equipped with a system of their moorings to the seabed containing one or more anchor braces 20, which are held on the seabed by anchors, piles or dead weight.

It is preferable to equip each module 10, 10', 10" his own system free of their moorings.

When more detailed consideration, as shown in Fig.9, the system anchor attachment contains the guide tube 21 for each anchor guy wire extending inside each of the connecting columns 13 and through the frame 12, and the equipment for moving/lifting anchor guy wire, representing, for example, a chain.

The present invention relates to method the described modular semi-submersible designs 1.

In General, this method comprises the following operating stages:

(a) separately launched predetermined amount of semi-submersible modules 10, 10', 10",

b) put the position of the waterline of each module close to his frame 12 to the column was mostly over water, acting on the fill level of the first and second watertight compartments 14 and 15,

b) have already launched semisubmersible modules with the columns, located mainly above the water, next to each other deck to deck,

g) connect between modules with�fight for forming an integrated structure by combining columns of one module with columns adjacent module by means of connecting consoles are attached to towering over the water areas of the columns.

Connecting the console connected to the columns of the first welding.

The method may include stage d), which structurally interconnect the deck adjacent modules.

It is preferable to carry out the Assembly of the individual modules are fully on the ground or in the dock and then into the water. Finished semi-submersible design is going in the sea with the use of the aforesaid procedures using boats. The number of modules in a complete semi-submersible design is determined after the determination of requirements for logistics space and usable space.

The present invention provides numerous advantages, some of which are mentioned above.

Thanks to the modularity of construction, proposed in the invention of the semi-submersible structure 1 can be easily adapted to design requirements related to space and capacity. The useful surface is easily increased in accordance with the design requirements of the space and capacity, which can change over time, as seen when comparing Fig.7 to Fig.8, where the surface of the structure 1 is increased by adding to the existing design of two new modules. Moreover, the possible entries for "conversion� the design by changing the number of modules and re-use.

Proposed in the invention of modular semi-submersible design 1 is a solution that can satisfy the diverse needs of multi-use, in particular for the sectors of tourism, energy and logistics both in ports and near the coast and even in open waters. Design 1 can also be used in inland open waters.

Due to the possibility of changing the position of the waterline and therefore the degree of immersion modular semi-submersible design 1 can be placed in the marine environment with the least possible impact it can withstand adverse sea conditions by raising the platform and its navigation on the columns. Because of this design 1 provides a high degree of comfort and safety on Board even in adverse sea conditions.

The ability to change the position of the waterline facilitates the connection of different modules, eliminating the need for operations underwater welding.

Modular semi-submersible structure 1 can be easily and simply assembled directly in the final location of the mooring.

Thus, it is believed that the present invention attains the intended purposes.

Obviously, we can assume that in the practical implementation of the invention, the shapes and configurations�and may differ from the above, at the same time remaining within the current scope of protection of the invention.

Moreover, all of the mentioned elements can be replaced by technically equivalent elements and the dimensions, shapes and materials can be changed according to requirements.

1. Modular semi-submersible structure comprising a platform for the tourist, commercial, industrial or military installations close to the coast or on lakes and rivers, as well as in public, inland waters, characterized in that it comprises two or more interconnected semi-submersible module(10, 10', 10"), each of which includes
- the deck (11) located in the operating conditions above the water level and limiting the portion of the said platform;
- the skeleton (12) located below the deck and are in operation in a submerged state, and containing within the first watertight compartments that perform the function of ballast,
- many of the columns (13), structurally connecting the frame (12) with the deck (11) and containing a second watertight compartments (15), performing the function of the ballast,
characterized in that it contains a console (16) intended for structural joints between the adjacent semi-submersible modules (10, 10', 10") in respective columns (13).

<> 2. Semi-submersible structure according to claim 1, characterized by the fact that the deck (11) has a perimeter in the shape of a polygon, preferably a hexagon, and the deck adjacent modules (10, 10', 10") are nearby, contacting each other by the parties to the perimeter and forming a continuous structure.

3. Semi-submersible structure according to claim 1, characterized by the fact that the deck is structurally adjacent modules are interconnected.

4. Semi-submersible structure according to claim 3, characterized by the fact that the deck (11) has a box-like structure containing at least two sheet element, upper and lower, arranged one above the other, and many of the connecting beams that are located between the two sheet elements, wherein the sheet elements and the connecting beams of the decks of two adjacent modules are structurally interconnected.

5. Semi-submersible structure according to claim 4, characterized in that the connecting beams of the deck module are arranged in a rectangular lattice.

6. Semi-submersible structure according to claim 5, characterized by the fact that the deck each module has a perimeter in the shape of a regular polygon, and the said rectangular lattice passes through the vertices of a polygonal perimeter, wherein the modules are located relative to each other so that the corresponding connecting beams, United int� at the vertices of a polygonal perimeter decks form a single rectangular lattice.

7. Semi-submersible structure according to claim 6, characterized in that the connecting console (16) welded to the columns (13).

8. Semi-submersible structure according to claim 6, characterized in that the connecting console (16) have a circular cross-section.

9. Semi-submersible structure according to claim 1, characterized in that the frame (12) made as a single element of annular shape.

10. Semi-submersible structure according to claim 9, characterized in that the frame (12) has a smaller plan dimensions than the dimensions of the deck (11).

11. Semi-submersible structure according to claim 1, characterized by the fact that the columns of (13) has a cross section of polygonal shape.

12. Semi-submersible structure according to claim 1, characterized in that each module contains a ballast system with water first and second watertight compartments used to change the level of water these watertight compartments and, therefore, changing the position of the waterline module(10, 10', 10").

13. Semi-submersible structure according to claim 12, characterized by the fact that the ballast system comprises one or more pumps for pumping water and a network of pumping conduits connected with said first and second watertight compartments (14, 15), and submersible design (1) equipped with centralized system management�effect to the ballast system of individual modules to ensure balanced charging and discharging watertight compartments mentioned modules and consequently the balancing provisions semisubmersible design (1) afloat.

14. Semi-submersible structure according to claim 1, characterized in that it contains a system of their moorings to the seabed, preferably one for each module(10, 10', 10").

15. Semi-submersible structure according to claim 14, characterized in that the anchor system mounting contains one or more anchor guy wires, each of which has a guide tube located inside the connecting columns (13) and crossing the frame (12), and the feed mechanism.

16. Semi-submersible structure according to claim 1, characterized in that it contains one or more fixed or removable propulsion to move the design on the water.

17. A method of assembling a semi-submersible structure according to one of the preceding claims, comprising a platform for placement on Board tourist or commercial, industrial or military installations close to the coast or on lakes and rivers, as well as in public, inland waters, which includes two or more interconnected semi-submersible module(10, 10', 10"), each of which contains a deck (11), which in operation is located above the water level and limits the portion of the said platform, a frame (12), which is located below the deck has the first waterproof compartments that perform the function of ballast, and which when operated�tion is submerged, and multiple columns (13), which are structurally connect the frame (12) with the deck (11) and have within themselves the second watertight compartments (15), performing the function of the ballast,
characterized in that comprises the following steps
(a) separately launched predetermined amount of semi-submersible modules(10, 10', 10"),
b) put the position of the waterline of each module close to the frame (12) to the column was mostly above the water level, by influencing the level of the first and second water-tight compartments;
b) have already launched semisubmersible modules with the columns, located mainly above the water level, side by side respective decks to each other;
g) connect the modules to each other to form an integrated structure by combining columns of adjacent modules by means of a connecting consoles mentioned console is connected to the sections of the columns, located above the water level.

18. A method according to claim 17, characterized by the fact that at the stage d) connecting the console connected to the columns by welding.

19. A method according to claim 17, characterized in that it comprises a stage d), which structurally interconnect the deck adjacent modules.



 

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Ice breaker aft // 2551638

FIELD: transport.

SUBSTANCE: ice breaker aft comprises ice breaking ledge rigidly secured at stem-post in the ship centre line and arranged behind rudder blade along ship motion. Top end of rudder blade turn axle extends thorough stem-post while bottom end is secured at the heel rigidly secured with keel. Said rudder blade turn axle is arranged on the side of ice breaking ledge side, said ledge being rigidly coupled by vertical prop with appropriate end of said heel to make a vertical protective frame around rudder propeller unit. Vertical prop rear edge is sharpened. Ice baffle plates are rigidly secured on both sides of stem-post at acute angle to horizontal plane at ship hull underwater surface, free ends of said plates are lowered under secured edges by at least to the level above below screw top edge. Distance from rudder blade turn axle to its rear edge does not exceed the radius of curvature described by said edge.

EFFECT: better controllability in reverse motion, higher reliability of rudder propeller protection.

3 cl, 3 dwg

FIELD: transport.

SUBSTANCE: proposed vessel consists of three modules. Mail and fuel hulls are arranged, each, at hydrofoil. Main hull with fuel hull and fuel hull with gliding tug are connected for vertical displacement. Water jet turbopump inlet and outlet are aligned at front view. Outlet pipe in projection on vertical plane is inclined to gliding site at 45 degrees. Turbojet is arranged at top section of transom area and is equipped with free turbine engaged with water-jet turbopump. Proposed airfoil vessel consists of three modules. Main hull with gliding site and airfoil can displace horizontally. This vessel is equipped with high-lift device.

EFFECT: lower drag, higher hydrodynamic properties, enhanced performances.

4 cl, 3 dwg

FIELD: transport.

SUBSTANCE: catamaran comprises two parallel hulls with connection elements, venting unit with drive mounted at catamaran fore and channels for air feed from the plant. Both hulls feature a flat-bottomed design. Outlet ends of said channels are directed to hull bottom at acute angle. Note here that said outlets of channels are made in said bottom as crosswise slits or rows of holes made uniformly over the bottom length.

EFFECT: higher speed, power savings in motion under water.

4 dwg

FIELD: transport.

SUBSTANCE: collapsible catamaran comprises two floats, collapsible carcass, composite connectors and connecting fasteners. Said floats are furnished with eyebolts, crosswise stability stabilizers, fore baffle plate, lower and upper support levers. Cabin collapsible carcass consists of vertical props, lengthwise and crosswise plates. The latter are provided with sleeves and angle pieces consisting of brackets, left and right shaped angle pieces, lateral and inner angle pieces.

EFFECT: simplified design, higher strength and reliability, better mobility and stability.

2 cl, 4 dwg

Hydrocycle // 2545161

FIELD: transport.

SUBSTANCE: hydrocycle includes hull, engine, clutch coupling, reducing gears, control mechanisms. The hull is made streamlined, cigar-shaped, with front transverse step and flat bottom. In the upper part of hull, driver's seat is installed at the sides of which horizontal stabilisers with elevating rudders are fixed. After stabilisers, water-aerial rudder is installed. Inside the middle part of body, through cylindrical channel is made which opens to top surface of hull and ends on flat surface of bottom behind step and is covered from top and from bottom by safety grids. In the upper part of through cylindrical channel, axial-flow air blower is installed behind which antivirtex device is placed. The engine is placed in the fore part of hull, revolving reducing gear and intrachannel reducing gear are connected with axial-flow air blower via clutch coupling. On the top part of hull, T-shaped handle is installed with possibility to turn in horizontal plane and kinematically connected water-aerial rudder and right and left elevating rudders and with possibility of separate turning in vertical plane.

EFFECT: improved technical characteristics of vessel.

9 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to shipbuilding and can be used also for fabrication of propeller screws for various vessels. For fabrication of the propeller helicoid screw a screw shaft is designed with a possibility of rotation, on the surface of which the blades of the propeller screw of the vessel hull are provisioned in series. The shaft is designed as two halves the end of which is hinge-jointedly placed in an active clamp. The active clamp is fixed in a middle part of a rigid cover with round surface from its bottom side and they are connected functionally with the machine for transfer of the rotation moment to them. The opposite ends of two halves of the shaft are hinge-jointedly placed in a passive clamp which is fix in the top part of the linear rigid cover with a round surface of its opposite sides.

EFFECT: decrease of speed of rotation of running screws is achieved.

3 dwg

Marine hydrofoil // 2244338

FIELD: shipbuilding; manufacture of ship stabilization systems equipment with deeply-submerged hydrofoils.

SUBSTANCE: proposed marine hydrofoil is provided with units for determination of its speed and depth of submergence mounted on it and connected to shipboard computer. Mounted additionally on hydrofoil are units for determination of side slip and angle of attack which are also connected to shipboard computer.

EFFECT: enhanced efficiency.

1 dwg

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