Device for storing a ship wing

Abstract

The invention relates to a device (10) for storing a ship wing (3) including an elongate cradle (1) which has a longitudinal axis X-X' and includes an open upper portion (1a) capable of receiving the wing (3) in a stowed position, and a lower support portion (1b), and including a protective structure intended to cover the upper portion (1a) of the cradle (1). According to the invention, the protective structure comprises at least one first cover (20) and at least one second cover (30) which are mounted so as to pivot on either side of the longitudinal axis of the cradle in order to switch between a first position, in which the at least first cover (20) and the at least second cover (30) are spaced apart so as to allow free access to the upper portion (1a) of the cradle (1), and a second position, in which the at least first cover (20) and the at least second cover (30) are brought together and cover the upper portion (1a) of the cradle (1).

Description

STORAGE DEVICE FOR A SHIP'S WING

[0001] The present invention relates to the field of wind-powered propulsion vehicles, of the ship type, or to hybrid ship-type vehicles, partly powered by wind, and it relates more particularly to a device for storing a sail or streamlined wing for such a ship.

[0002] As is generally known, when not in use, the main sail of a sailboat is lowered onto its mast. A protective bag covers it, which is usually deployed and removed manually. However, this manual operation is often difficult to perform due to the mast's mobility and the awkward positioning of the operator relative to it.

[0003] To facilitate the operation of covering and removing the mainsail cover when lowered onto the bollard, a solution has been proposed in document FR 2969117. This document describes a sail protection device in the form of a flexible bag, fixed to the top of the bollard. The bag is equipped with opening and closing means, such as elastic strips or inflatable tubes, actuated along an axis parallel to the longitudinal axis of the bollard. When actuated in the closed position, these means surround the sail placed inside the device; a reverse movement is performed to reach the open position. The elastic strips, or, in a variant, the inflatable tubes, are deployed and retracted using a remote control device connected to traction or pneumatic actuators.Although it allows remote control of the opening and closing of the soft bag enclosing the sail, this solution only allows a small range of motion and thus proves difficult to handle when lowering the sail, especially in strong winds when it starts to undulate strongly.

[0004] To overcome these drawbacks, document EP 2905218 proposes a sail storage solution comprising two rigid shells of The generally truncated cone-shaped shells are mounted pivotally around hinges located on the sides of the frame. The shells are moved manually using a set of ropes called "lazy jacks," or with cables via a pulley system. While this solution allows for a wider opening of the shells, thus better accommodating the sail when lowered, it has its limitations when cables or ropes are required to open and close the shells, which can impede the sail's movement. Furthermore, given the significant bulk of the two shells when open, this solution is unsuitable for storing very large sails, such as the wings used on very large vessels, like cargo ships.Furthermore, this solution is not suitable for a vessel with a retractable mast since the "lazy-jacks" are attached to it.

[0005] Similar to sailboats, on a vessel equipped with a propulsion wing—a sail with a double skin that allows it to take on an airplane wing profile when hoisted for wind propulsion—a cradle is required to house the wing when it is lowered or folded back on itself. This cradle is supported by the mast, typically has rigid walls, and is a hollow, roughly oblong-shaped structure. Because the cradle is open at the top, when the wing is stowed in the cradle, it can be damaged by exposure to the elements (wind, water, bird droppings, etc.) if it is not protected.

[0006] According to guidelines from the independent Norwegian foundation "Det Norske Veritas" (DNV), a leading international provider of risk management services, a protective element for a ship's sail or wing must protect it against dust (e.g., during the loading / unloading of bulk carriers), against impacts (e.g., from falling objects), against weathering (such as water or ice), and against UV radiation (to limit aging), while also minimizing its impact. aerodynamic and capable of withstanding real winds of more than 50m / s in closed position.

[0007] Thus, to protect the wing contained within a small or medium-sized cradle, a simple solution is to cover the cradle manually. This involves unfurling a thick polymer tarpaulin, usually equipped with grommets along its edges, and securing it to the boat using fasteners that engage with the tarpaulin's grommets. However, for large cradles, for example, those approximately 15-25 meters long and 5-8 meters wide, manual deployment is no longer feasible.

[0008] One objective of the invention is to remedy the aforementioned disadvantages and to provide an original solution for a storage device for a large ship's sail or wing, enabling it to be effectively protected when lowered into its cradle, a device which proves to be reliable in operation and easily maneuverable.

[0009] This objective is achieved by the invention which proposes a device for storing a ship's wing comprising an elongated cradle with longitudinal axis X-X', having an upper part adapted to receive the wing in a lowered position, and a lower support part, as well as a protective structure intended to cover said upper part of the cradle, characterized in that said protective structure comprises at least a first concave hood and at least a second concave hood,said at least first hood and at least second hood being movable by tilting in opposite directions on either side of the longitudinal axis of the cradle so as to pass from a first position in which said at least first hood and at least second hood are spread apart to allow free access to said upper part of the cradle and in which the inner face of each hood surrounds at least partially the outer face of the lower part of said cradle, and a second position in which said at least first hood and at least second hood are brought together and cover the upper part of the cradle.

[0010] In other words, the invention proposes a device for storing a ship's wing in an elongated cradle that accommodates the wing in a folded position and protects it from external damage. The device comprises, more specifically, concave-shaped, movable, tilting covers on either side of the cradle's longitudinal axis. These covers can be stored in the lower part of the cradle in their open position and then meet above the open upper part, forming an open upper deck of the cradle to enclose the wing. Tilting refers to the movement of all points of a cover by changing position by the same distance relative to the cradle's longitudinal axis. Such tilting can be achieved using a drive mechanism such as a deformable parallelogram or by rotating the movable covers.

[0011] Such a mechanism has the advantage of using rigid movable hoods with a very small footprint in the open position, while allowing a good aerodynamic profile to be offered to the cradle in the closed position.

[0012] In a preferred embodiment of the invention, at least one first hood can be made to rotate about an axis Y-Y' in a first direction, and at least one second hood can be made to rotate about an axis Z-Z' in a direction opposite to the first, the axes Y-Y' and Z-Z' being parallel to the longitudinal axis X-X' of the cradle. The axes Y-Y' and Z-Z' can be supported in bearings located on either side of a vertical median plane of the cradle at a distance defined by the cradle geometry and the desired height between the upper bridge and the inner faces of the hoods. In another embodiment, the axes Y-Y' and Z-Z' can also coincide and thus form a single axis of rotation, which is substantially coincident with the axis X-X' of the cradle, and which can accommodate the support bearings for the different hoods.

[0013] Said at least one first hood and at least one second hood may have substantially identical shapes and dimensions.

[0014] The said cradle may include, distributed along its length, several arched uprights forming rotating guide rails for a first hood and for a second hood. This ensures the rotational guidance of the hoods, which are hollow parts with large dimensions and therefore a significant mass, while preventing their deformation.

[0015] The device of the invention may include motorized means for rotating said at least first hood and at least second hood.

[0016] The said motorized means may include at least one geared motor attached to the cradle capable of rotating a hood.

[0017] The output shaft of said geared motor can drive a pinion which can cooperate with a toothed ring sector located on the internal walls of the hood.

[0018] Each hood can comprise several sectors of toothed rings arranged along its internal generatrix. This ensures the rotational movement of the hoods, which are hollow parts with large dimensions and therefore considerable mass, while preventing their deformation.

[0019] In one embodiment, the device of the invention may comprise two first concentric hoods arranged to rotate about the Y-Y' axis and two second concentric hoods arranged to rotate about the Z-Z' axis. This makes it possible to cover a cradle of greater width, for example from 6m, using several concentric and retractable hoods.

[0020] The hood located radially furthest inward can support the guide rails and the drive motor for rotating the hood located radially furthest outward.

[0021] The device of the invention may include a control unit capable of synchronously controlling all the geared motors that rotate the same hood. This makes it possible to drive all the toothed ring sectors of each hood simultaneously in order to prevent the hood from twisting.

[0022] The device of the invention may include a control unit capable of controlling the synchronized operation of at least the first and second hoods between said first and second positions. Thus, the synchronized operation of the hoods located on either side of the longitudinal axis of the cradle optimizes operation so that the closing and opening, respectively, can be symmetrical and preferably progressive.

[0023] The device of the invention may include at least one locking device in the closed position of said at least first hood and at least second hood.

[0024] These hoods may have a structure formed of rigid uprights covered with a stretched tarpaulin, a metal sheet or an envelope made of a composite material.

[0025] The objective of the invention is also achieved with a vessel comprising at least one mast forming a support for a wing storage device of the invention.

[0026] The invention will be better understood with the following description, which is based on the following figures: Figure 1 is a schematic view of a ship comprising a wing storage device according to the invention; Figure 2 is a perspective view of a wing storage device according to a first embodiment of the invention, the device being shown in the open position; Figure 3 is a perspective view of the device of Figure 2 shown in the closed position; Figure 4 is a simplified and enlarged perspective view of the device of Figure 2; Figure 5 is a front view of the device of Figure 2; Figure 6 is a front view of the device of Figure 3; Figure 7 is a perspective view illustrating a portion of the components located inside the device of Figure 2; Figure 8 is a perspective view of a wing storage device according to a second embodiment of the invention, the device being shown in the open position; Figure 9 is a simplified perspective view of the device of Figure 8; Figure 10 is a perspective view of the device of Figure 8, the device being shown in the partially closed position; Figure 11 is a perspective view of the device of Figure 8, the device being shown in the fully closed position; Figures 12, 13 and 14 are front views of the device illustrated in Figures 8, 10 and 11.

[0027] In the various figures, identical or similar elements bear the same reference. Their description is therefore not systematically repeated.

[0028] Figure 1 schematically illustrates a boat or vessel 2 comprising a streamlined sail or wing 3, attached to a mast 4 supported by the hull of the vessel. Means for hoisting the wing or sail are also provided (not shown in the figures) from a receptacle or cradle 1 for receiving the wing 3, a cradle supported by the mast 4, to the base or lower part of the latter, above the deck of the boat. The wing 3 is of the inflatable type, that is to say, it comprises two adjacent surfaces joined at their edges to form a closed cavity into which air is blown. The cavity includes several curves 5 regularly distributed along the height of the wing, the curves being separated by ribs permeable to the air blown by fans located inside the wing. or in the cradle. The curves have different dimensions and form the wing profile when it is inflated, guided, and hoisted as described in the applicant's document WO202224881 1. The wing 3 in Figure 1 is illustrated in three positions: a first position 3a in which it is hoisted to its maximum, an intermediate position 3b, and a fully collapsed position 3c in the cradle 1.

[0029] In the example illustrated in the figures, the wing has significant dimensions, such as a height exceeding 40m and a surface area exceeding 500m². 2 The wing material is a substantially airtight fabric, such as fabric impregnated for waterproofing purposes. This material is preferably treated to resist UV radiation, salt spray, bird droppings, and wind stress.

[0030] In the example shown in the figures, the mast 4 is telescopic, meaning it is made of several tubular elements that slide relative to each other to extend or retract. Such a telescopic mast supports a head 6 at its upper end which, when the mast elements are extended, pulls the wing upwards while simultaneously inflating it, thus raising the wing. When lowering, the wing is deflated and the head assists the retraction of the mast elements into the cradle 1.

[0031] The cradle 1, as more clearly seen in Figure 4, is a rigid, hollow assembly of generally prismatic shape. It is elongated along a longitudinal axis X-X', the profile of which points towards the leading edge of the wing 3. One of the cradle's functions is to receive the wing 3 in its collapsed position. The cradle 1 comprises an open upper part 1a, called the upper deck, designed to receive the wing 3 in its collapsed position, and a lower part 1b whose role is to connect it to the mast 4 and to provide support for the other components of the cradle. The upper part 1a is formed by a flat surface creating a floor or upper deck for the cradle 1. A rim 1c, called the bulwark, is provided around the perimeter of the upper deck to better orient the wing within the cradle. upper 1 a when it arrives in the slumped position on cradle 1 and secure the upper deck when personnel are there.

[0032] According to the invention, more particularly with reference to Figures 2 and 3, a protective structure for the upper part 1a of the cradle 1 comprises two covers 20, 30, each having a concave shape. The two covers are pivoted on either side of the longitudinal axis X-X' of the cradle 1 between a first position, in which the covers 20, 30 are spread apart to allow free access to said upper part 1a of the cradle 1 and the inner face 20i, 30i of each cover at least partially surrounds the outer face of the lower part 1b of said cradle 1, and a second position in which said at least two covers 20, 30 are brought together and cover the upper part 1a of the cradle 1. Thus, when in the second position, the covers 20, 30 are brought together, covering the upper part 1a of the cradle 1 and defining with it a closed volume for receiving wing 3 in a collapsed position.Preferably, hoods 20, 30 face each other vertically from the top of cradle 1.

[0033] The first hood 20 rotates about an axis Y-Y' in one direction, and the second hood 30 rotates about an axis Z-Z' in the opposite direction, the axes Y-Y' and Z-Z' being parallel to the longitudinal axis X-X' of the cradle. In a preferred embodiment, the first hood 20 and the second hood 30 have symmetrical shapes with respect to a vertical plane passing through the longitudinal axis X-X', which forms a plane of symmetry for the cradle 1, and they have substantially identical dimensions. Each hood 20, 30 has a domed or rounded shape that is an angular sector derived from a shape of revolution obtained by rotating a predetermined profile about its respective axis of rotation Y-Y', or Z-Z', respectively. The axes Y-Y', Z-Z' are held in bearings located on either side of a vertical median plane of the cradle, bearings made in vertical end posts 11, 12 of the cradle 1 (figure 4).In a variant (not illustrated), the Y-Y', Z-Z' axes can also coincide and in this case the device of the invention includes a single axis of rotation common to both hoods and capable of accommodating the hood support bearings, an axis which is substantially coincident with the X-X' axis of the cradle.

[0034] The 20 and 30 hoods are rigid shells made of a composite material of resin and fiberglass, carbon fiber, or natural fibers. In another example, each 20 and 30 hood comprises a rigid structure covered with a stretched tarpaulin, the tarpaulin being attached to the metal structure by stitching, gluing, or a removable VELCRO®-type assembly. This structure can also be covered with a metal sheet or a shell made of a composite material based on resin and fiberglass, carbon fiber, or natural fibers.

[0035] The actuation of the hoods 20, 30 during movement, their guidance relative to the cradle 1, and their operation will be explained below with reference to Figures 4 to 7. Figure 4 is a simplified perspective view of the storage device 10 of the invention in which the hoods 20, 30 have been removed to make the hood guidance and actuation devices visible. The cradle 1 is clearly visible in Figure 4, particularly its lower part 1b, which has side walls enclosing a closed volume at its upper end, formed by a floor or platform that constitutes the upper part 1a, or upper deck, of the cradle. The rim 1c projects vertically from the horizontal floor of the upper deck along its entire circumference.The external walls of the lower part 1b of the cradle 1 support, on either side of the plane of symmetry passing through the longitudinal axis of the cradle, several curved uprights, distributed along the length of the cradle and forming rotating guide rails for the hoods 20, 30. Thus, guide rails 23a, 23b and 23c ensure the rotational guidance of the first hood 20 and guide rails 33a, 33b, and 33c ensure the rotational guidance of the second hood 30. The guide rails 23a, 23b, 23c are rigid uprights in the shape of an arc of a circle whose center is located on the axis Y-Y' mounted fixed by means of rigid bars on the floor of the upper part 1a (figure 7). Similarly, the guide rails 33a, 33b, 33c are rigid, arc-shaped uprights whose center is located on the Z-Z' axis, fixedly mounted using rigid bars on the floor of the upper part 1a.To facilitate movement on the guide rails, each hood includes several pairs of rollers moving in the grooves of each rail, on either side of it, the rollers being mounted freely to rotate in bearings held by rigid uprights. arched concentrically to the respective guide rails. Thus, uprights 25a, 25b and 25c form a support for several pairs of rollers 26 which rotate during their movement on the rails 23a, 23b and 23c of the hood 20. Similarly, uprights 35a, 35b and 35c form a support for several pairs of rollers 36 which rotate during their movement on the rails 33a, 33b and 33c of the hood 30.

[0036] The storage device 10 of the invention further includes motorized means for rotating the covers 20 and 30. In the example illustrated in Figures 2 to 7, these motorized drive means comprise, for each cover, a geared motor 27, 37, fixedly mounted on the cradle 1, for example by means of rigid brackets 27', 37' bearing against the floor of the upper part 1a. The output shaft of each geared motor 27, 37 comprises an elongated rotating shaft 28, 38 having a pinion 29, respectively 39, mounted at each of its ends. Each pinion 29 cooperates with a toothed ring sector 41 located on the inner walls of the cover 20. Similarly, each pinion 39 cooperates with a toothed ring sector 51 located on the inner walls of the cover 30.

[0037] During operation, when the geared motors 27 and 37 receive a start command, preferably synchronously, they rotate the hoods 20 and 30 around their axes of rotation Y-Y' and Z-Z', respectively, in opposite directions so as to bring them closer together. In the example illustrated in Figures 2 to 7, the hoods 20 and 30 rotate approximately 74° between the fully open and fully closed positions and come to cover the upper part of a cradle 1 with a width less than or equal to 5.5 m. When the two hoods reach the closed position, directly above the upper part of the cradle, they are held in this position by several locking devices 50 distributed along the length of the cradle; these locking devices may be, for example, electromagnetic locks. In one embodiment, a single locking device is located midway along the length of the cradle 1.

[0038] Figures 8 to 14 illustrate another embodiment of the invention in which the storage device 10 includes a protective structure capable of covering the upper part 1 a of the cradle 1 having a width greater than that of the previously described embodiment, this structure comprising two pivoting covers per side of the cradle, therefore four pivoting covers in all.

[0039] In the illustrated example, the storage device 10 comprises four covers, symmetrical in pairs on either side of a plane of symmetry which is a median vertical plane passing through the longitudinal axis X-X' of the cradle. Thus, as more clearly seen in figures 8 and 11, each side of the cradle comprises an inner cover 22, respectively 32 and an outer cover 21, respectively 31. The covers 21, 22 are pivotally mounted about a longitudinal axis Y-Y' and the covers 31, 32 are pivotally mounted about a longitudinal axis Z-Z', parallel to Y-Y' and to the longitudinal axis X-X' of the cradle 1. The four covers 21, 22, 31, 32 are preferably driven synchronously, the drive in motion is achieved by means of toothed sectors distributed along the inner parts of said four covers, the toothed sectors being driven by geared motors each having a pinion on its output shaft.Thus, the arrangement of several drives distributed along the length of the cradle structure significantly reduces the deformations (due to twisting) experienced by the covers 21, 22, 31, and 32, which are large, thin-skinned hollow parts. The storage device of the invention therefore allows for the covering of large, oblong-shaped surfaces.

[0040] During operation, a first phase consists of rotating the inner cover 22 around the longitudinal axis Y-Y' by approximately 45°, which in turn drives the outer cover 21, and rotating the inner cover 32 around the axis Z-Z' by approximately 45°, which in turn drives the outer cover 31 (Fig. 12). To this end, several drive motors, in particular geared motors 27, 37, are fixed to the cradle 1 and act via toothed rings 41, 51 located on the inner cover 22, 32. The output shaft of each geared motor 27 includes a pinion that cooperates with a toothed ring sector 41 located on the inner walls of the inner cover 22. Similarly, the output shaft of each geared motor 37 includes a pinion which cooperates with a toothed ring sector 51 located on the internal walls of the inner cover 32.

[0041] When the inner hood 22, respectively 32, has reached its final position, it comes to a stop and a second deployment phase takes place, during which each outer hood 21, respectively 31, will also rotate by an additional 45°, relying for this purpose on the inner hood 22, respectively 32. For this purpose, moving drive means, in particular geared motors 27i are fixed on the inner hood 22 and geared motors 37i are fixed on the inner hood 32 and act via pinions installed on their output shafts on toothed rings 43 respectively 53 (fig. 14) fixed to the outer hoods 21, respectively 31.The entire system is therefore equipped with a first motor attached to the cradle 1 and a second motor attached to the inner covers 22 and 32. These motors preferably operate sequentially, in that order to activate the closing of the covers and in the reverse order to open them. The various geared motors are controlled by a control unit designed to synchronously control all the geared motors that rotate the same cover. This allows all the toothed ring sectors of each cover to be driven simultaneously, thus preventing the cover from twisting.

[0042] Similar to the variant described with reference to Figures 2 to 7, the device in Figures 8 to 14 comprises guiding means including several curved rails fixed to the cradle 1, distributed along its length, in particular rails 23a, 23b, 23c, and 23d on one side of the median plane of the cradle 1 and rails 33a, 33b, 33c, and 33d on the other side of the median plane of the cradle 1. Pairs of rollers held by uprights of the inner covers 22 and 32 move along these rails. In this variant, the inner cover 22 includes curved guide rails 23a', 23b', 23c', and 23d', and the inner cover 32 includes curved guide rails 33a', 33b', 33c', and 33d'. to guide pairs of rollers held by uprights fixed to the internal walls of the outer hoods 21, 31 (not shown).

[0043] Thus, in this variant of the storage device 10 of the invention comprising four hoods, it is possible to cover a cradle having a width of approximately 6.2 m and a length of 21 m.

[0044] Preferably, the storage device 10 of the invention comprises a control unit capable of controlling the synchronized operation of at least the first and second covers between said first and second positions. Thus, the synchronized operation of the covers located on either side of the longitudinal axis of the cradle optimizes operation so that the closing and opening, respectively, can be carried out symmetrically and progressively.

[0045] In one variant (not illustrated), two hoods located on either side of the longitudinal axis of the cradle can be connected by a cardan-type mechanical link or by a set of gears that can ensure their synchronous operation when the drive is only on one side.

[0046] The wind-powered propulsion system of the invention, comprising a self-supporting telescopic mast 4 and an inflatable sail or wing 3 with a thick profile around this mast, operates as follows. The entire propulsion system retracts into the storage device 10 according to the invention. The operation is preferably fully automatic. Thus, at the operator's command, the storage device 10 orients itself relative to the wind, and the wing 3 is inflated simultaneously with the mast 4 being deployed. Then, as soon as the wing 3 is inflated and the mast 4 is deployed, the storage device 10 is oriented relative to the wind to optimize thrust.

[0047] Other variations and embodiments of the invention can be envisaged within the scope of the invention as claimed. Thus, instead of an inflatable wing, a wing with telescopic segments and tensioned fabric can be used which is found inside a storage device of the invention in a collapsed position.

[0048] In another variant of the ship wing storage device of the invention, there may be three or more concentric hoods on each side of the longitudinal axis of the cradle.

Claims

Demands 1. A ship wing (3) storage device (10) comprising an elongated cradle (1) with longitudinal axis X-X', having an open upper portion (1a) adapted to receive the wing (3) in the lowered position, and a lower support portion (1b), as well as a protective structure intended to cover said upper portion (1a) of the cradle (1), characterized in that said protective structure comprises at least one first concave cover (20; 21, 22) and at least one second concave cover (30; 31, 32), said at least first cover (20; 21, 22) and at least second cover (30; 31, 32) being movable by tilting in opposite directions on either side of the longitudinal axis of the cradle so as to move from a first position in which said at least first cover (20; 21, 22) and at least second cover (30; 31, 32) are moved aside to allow free access to said upper part (1a) of the cradle (1) and in which the inner face of each hood (20;21, 22; 30; 31, 32) surrounds at least in part the external face of the lower part (1 b) of said cradle (1) and a second position in which said at least first cover (20; 21, 22) and at least second cover (30; 31, 32) are brought together and cover the upper part (1a) of the cradle (1).

2. Device according to claim 1, characterized in that said at least one first hood (20; 21, 22) is made to rotate about an axis Y-Y' in a first direction, in that said at least second hood (30; 31, 32) is made to rotate about an axis Z-Z' in a direction contrary to the first, the axes Y-Y' and Z-Z' being parallel to the longitudinal axis X-X' of the cradle.

3. Device according to any one of the preceding claims, characterized in that said at least one first hood (20; 21, 22) and at least one second hood (30; 31, 32) have substantially identical dimensions.

4. Device according to any one of the preceding claims, characterized in that said cradle (1) comprises, distributed along its length, several curved uprights forming rotational guide rails for a first hood (20) and for a second hood (30).

5. Device according to any one of the preceding claims, characterized in that it comprises motorized means for rotating said at least first hood (20; 21, 22) and at least second hood (30; 31, 32).

6. Device according to the preceding claim, characterized in that said motorized means comprise at least one geared motor (27, 37) integral with the cradle (1) capable of rotating a hood (20, 30).

7. Device according to the preceding claim, characterized in that the output shaft of said geared motor drives a pinion (29, 39) which cooperates with a toothed ring sector (41, 51) located on the internal walls of the hood (20, 30).

8. Device according to the preceding claim, characterized in that each hood (20, 30) comprises several sectors of toothed rings (41, 51) arranged along its internal generatrix.

9. Device according to any one of claims 2 to 8, characterized in that it comprises two first concentric hoods (21, 22) arranged to rotate about the Y-Y' axis and two second concentric hoods (31, 32) arranged to rotate about the Z-Z' axis.

10. Device according to the preceding claim dependent on at least claim 4, characterized in that the hood located radially furthest inward (22, 32) supports the guide rails and a drive motor for rotating the hood located radially furthest outward (21, 31).

11. Device according to claim 8 or according to one of claims 9 or 10, claim 9 being dependent at least on claim 6, characterized in that it comprises a control unit capable of controlling the synchronous operation of all the geared motors which drive in rotation the same hood.

12. A device according to any one of the preceding claims, characterized in that it comprises a control unit capable of controlling the synchronized operation of said at least first cover (20; 21, 22) and at least second cover (30; 31, 32) between said first position and said second position.

13. A device according to any one of the preceding claims, characterized in that it comprises at least one locking device (50) for the closed position of said at least first cover and at least second cover.

14. Device according to any one of the preceding claims, characterized in that said hoods (20; 21, 22; 30; 31, 32) have a structure formed of rigid uprights covered with a stretched tarpaulin, or a metal sheet or an envelope made of a composite material.

15. Vessel comprising at least one mast (4) forming a support for a wing storage device (10) according to any one of the preceding claims.

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