VESSEL WITH SPUD POLE ASSEMBLY

Description

BACKGROUND

[0001] The invention relates to a vessel with a spud pole, such as a dredging vessel, such as defined in US 4 399 623 A. The spud pole forms an anchoring point in the sea bed straight below the dredging vessel. The spud pole is guided through a spud pole holder and is connected to a hoisting system. During normal operations the spud pole is frequently lowered and retracted by means of the hoisting system. When the dredging operations are finalized, the spud pole is fully retracted and turned down towards the deck in horizontal position.

[0002] JP 2001-48084 discloses a vessel with a spud pole and a method for hoisting that spud pole. For such dredging vessel it is necessary that the spud pole can be retracted at all times, for example at unexpected weather and sea conditions. However, in practice the hoisting system may fail. In case of such failure the spud pole may buckle, whereby it needs to be replaced.

[0003] It is an object of the present invention to provide additional provisions for a dredging vessel with a spud pole to retract or hoist its spud pole.

SUMMARY OF THE INVENTION

[0004] According to a first aspect, the invention provides a vessel comprising a hull and a spud pole assembly, wherein the spud pole assembly comprises a base frame, a spud pole holder that is pivotably connected to the base frame, an elongate spud pole that is guided by the spud pole holder to be hoisted and lowered in its elongate direction with respect to the hull, a first hydraulic cylinder that is at its first side pivotably connected to the base frame and at its operative opposite second side pivotably connected to the spud pole holder to pivot the spud pole holder and the spud pole with respect to the base frame, and a clamping assembly to clamp the spud pole, which clamping assembly is operatively connected to the first side of the first hydraulic cylinder, wherein the spud pole assembly is able to switch between a turn over mode and a hoisting mode, wherein in the turn over mode the position of the pivot between the first side of the hydraulic cylinder and the spud pole holder is fixed with respect to the spud pole holder whereby the extension or retraction of first hydraulic cylinder pivots the spud pole holder and the spud pole with respect to the base frame, and wherein in the hoisting mode the pivot between the first side of the hydraulic cylinder and the spud pole holder is displaceable with respect to the spud pole holder whereby the extension or retraction of the first hydraulic cylinder lowers or hoists the operatively connected clamping assembly with respect to the base frame.

[0005] The dredging vessel according to the invention comprises a spud pole holder that is in the turn over mode pivotable by the first hydraulic cylinder. This first hydraulic cylinder is present to be able to turn down the spud pole after its full retraction. In the hoisting mode, the first hydraulic cylinder is used to lower and hoist the clamping assembly, and thereby the spud pole. In this way the same first hydraulic cylinder efficiently forms a mayor part of a backup facility to retract the spud pole when primary hoisting provisions fail.

[0006] In an embodiment the clamping assembly is operatively connected to the first side of the first hydraulic cylinder by a first hoisting cable that is guided along a hoisting sheave on the spud pole holder, wherein the hoisting sheave is located above the clamping assembly and the first side of the first hydraulic cylinder. The hoisting cable forms a direct connection between the hydraulic cylinder and the clamping assembly. The first hoisting cable may hang loosely when it is not used.

[0007] In an embodiment the spud pole assembly comprises a first rail that is connected to the spud pole holder, a slider that is slidable along the first rail, and a first releasable lock between the slider and the first rail to lock the sliding movement of the slider along the first rail, wherein the first side of the first hydraulic cylinder is pivotably connected to the slider and the clamping assembly is operatively connected to the slider, wherein in the turn over mode the first lock is locked and in the hoisting mode the first lock is released. The slider is guided by the rails whereby the displacement of the pivot with respect to the spud pole holder is well controlled and limited to a sliding movement only after release of the first lock.

[0008] In an embodiment the spud pole holder comprises a tilting frame with a first passage for the spud pole that is pivotably connected to the base frame, wherein the spud pole assembly comprises a second releasable lock between the tilting frame and the spud pole to lock the movement of the spud pole in its elongate direction with respect to the tilting frame. The second releasable lock enables temporary fixation of the spud pole, whereby it can be hoisted stepwise by reciprocal strokes of the clamping assembly, powered by the first hydraulic cylinder.

[0009] In an embodiment the spud pole holder comprises a tilting frame with a first passage for the spud pole that is pivotably connected to the base frame, wherein the spud pole assembly comprises a third releasable lock between the tilting frame and the base frame to lock the pivoting movement of the tilting frame with respect to the base frame. The third lock may be unlocked when the fully retracted spud pole is finally turned down in the turn over mode.

[0010] In an embodiment the spud pole holder comprises a tilting frame with a first passage for the spud pole that is pivotably connected to the base frame, and a yoke that is pivotably connected to the tilting frame or to the base frame, wherein the yoke comprises an engagement end for engagement of the spud pole spaced apart from the tilting frame, wherein the first side of the first hydraulic cylinder is pivotably connected to the yoke. The yoke may be turned down away from the spud pole during regular dredging operations to allow the spud pole to make some sideways movements with respect to the hull.

[0011] In an embodiment the hoisting sheave is mounted to the yoke.

[0012] In an embodiment the clamping assembly is reciprocally movable by the first hydraulic cylinder between the tilting frame and the engagement end of the yoke.

[0013] In an embodiment the clamping assembly comprises a passage for the spud pole, which passage is bounded by a first clamping face and a second clamping face that are opposite to each other transverse to the longitudinal direction of the spud pole, wherein the clamping assembly is movable between a first position and a second position with respect to the spud pole, wherein in the first position the first clamping face and the second clamping face together keep a clearance with respect to the spud pole and wherein in the second position the first clamping face and the second clamping face together tightly engage the spud pole. The first clamping face and the second clamping face enter into a force closed engagement of the spud pole. In this manner the spud pole itself does not need to be provided with additional features to be employed in the hoisting mode.

[0014] In an embodiment thereof the first clamping face is in the second position raised with respect to the second clamping face in the longitudinal direction of the spud pole.

[0015] In an embodiment thereof the first side of the first hydraulic cylinder is operatively connected to the first clamping face to raise it with respect to the second clamping face.

[0016] In an embodiment the clamping assembly comprises a master clamp with the first clamping face, a slave clamp with the second clamping face and pairs of parallel tensioning rods that are pivotably connected to the master clamp and the slave clamp to form a parallelogram mechanism therewith. The parallelogram mechanism ensures that the master clamp can only translate with respect to the slave clamp within a limited swinging movement to position both clamping faces straight against the circumferential wall of the spud pole.

[0017] In an embodiment the spud pole holder with the spud pole is in the turn over mode pivotable by the first hydraulic cylinder between a vertical position in which the spud pole extends substantially vertical and horizontal position in which the spud pole extends substantially horizontal.

[0018] In an embodiment the center line of the first hydraulic cylinder extends in the hoisting mode under an angle of less than 20 degrees with respect to the center line of the spud pole.

[0019] In an embodiment the clamping assembly is in the hoisting mode hoisted by retraction of the first hydraulic cylinder.

[0020] In an embodiment the spud pole is connected to or suspended from a second hoisting cable that is connected to a hoisting winch. These hoisting facilities can be used for the regular frequent lowering and retraction of the spud pole.

[0021] In an embodiment the hull comprises an elongate well, wherein the base frame is movable along second rails that extend horizontally along the well, wherein the vessel comprises a second hydraulic cylinder between the hull and the base frame to move the base frame along the second rails.

[0022] In an embodiment the vessel is a dredging vessel.

[0023] According to a second aspect, the invention provides a method for hoisting an elongate spud pole of a vessel, wherein the vessel comprises a hull and a spud pole assembly, wherein the spud pole assembly comprises a base frame, a spud pole holder that is pivotably connected to the base frame, wherein the spud pole is guided by the spud pole holder to be hoisted and lowered in its elongate direction with respect to the hull, a first hydraulic cylinder that is at its first side pivotably connected to the base frame and at its operative opposite second side pivotably connected to the spud pole holder to pivot the spud pole holder and the spud pole with respect to the base frame, and a clamping assembly to clamp the spud pole, which clamping assembly is operatively connected to the first side of the first hydraulic cylinder, wherein the spud pole assembly is able to switch between a turn over mode and a hoisting mode, wherein in the turn over mode the position of the pivot between the first side of the hydraulic cylinder and the spud pole holder is fixed with respect to the spud pole holder whereby the extension or retraction of first hydraulic cylinder pivots the spud pole holder and the spud pole with respect to the base frame, and wherein in the hoisting mode the pivot between the first side of the hydraulic cylinder and the spud pole holder is displaceable with respect to the spud pole holder whereby the extension or retraction of the first hydraulic cylinder lowers or hoists the operatively connected clamping assembly with respect to the base frame, wherein the method comprises switching to the hoisting mode when the spud pole is turned upright, and hoisting the clamping assembly by means of the first hydraulic cylinder after engagement of the spud pole.

[0024] In an embodiment thereof the clamping assembly comprises a passage for the spud pole, which passage is bounded by a first clamping face and a second clamping face that are located opposite to each other transverse to the longitudinal direction of the spud pole, wherein the first hydraulic cylinder is operatively connected to the first clamping face, wherein the method comprises hoisting the first clamping face with respect to the second clamping face in the longitudinal direction of the spud pole whereby the first clamping face and the second clamping face together tightly engage the spud pole to enter in a force close engagement with it.

[0025] The various aspects and features described and shown in the specification can be applied, individually, wherever possible. These individual aspects, in particular the aspects and features described in the attached dependent claims, can be made subject of divisional patent applications.

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The invention will be elucidated on the basis of an exemplary embodiment shown in the attached drawings, in which:

Figures 1A and 1B are an isometric view and a partial longitudinal section of a suction cutter dredger with a spud carriage assembly according to an embodiment of the invention, during emergency hoisting;

Figures 2A, 2B and 2C are side views of the spud carriage assembly of figures 1A and 1B during turning down of the spud pole thereof.

DETAILED DESCRIPTION OF THE INVENTION

[0027] Figures 1A shows the spud pole side of a vessel 1, such as a cutter suction dredger or backhoe dredger. The vessel 1 comprises a elongate hull 2 with a spud carriage well 5 that debouches in the back side 3 of the hull 2. For example in case of a cutter suction dredger, the vessel 1 is at the opposite side of the hull 2 provided with a rotating cutter head on a ladder that is not shown. The spud carriage well 5 comprises two parallel side walls 4 and two parallel horizontal rails 7 suspended along them for sliding support of a spud carriage assembly 20 according to an embodiment of the invention. The spud carriage assembly 20 and the horizontal rails 7 are also shown in isolation in figure 1B.

[0028] The spud carriage assembly 20 comprises a steel base frame 21 having a front wall 22 and two parallel side walls 23 generally forming a hollow U-profile that is open at the back side of the hull 2. The base frame 21 comprises two supports 25 that project from the side walls 23. The supports 25 are at the bottom side mounted to a hinge 26 to which slide shoes 30 are connected. The slide shoes 30 engage the rails 7 to allow a reciprocal sliding movement of the base frame 21 in horizontal direction A.

[0029] In the shown embodiment, the base frame 21 comprises on each side an upper sheave holder 40 each holding two sheaves 41 next to each other above the slide shoes 30 and two resilient lower sheave holders 42 each holding a sheave 43 below the slide shoes 30. The hull 2 is provided with schematically indicated sheaves 44, 47 above the spud carriage well 5 and schematically indicated sheaves 45, 46, 48, 49 inside the spud carriage well 5. The base frame 21 is kept upright while slid in the horizontal direction A by means of two steel cross wires 50, 51 on each side of the base frame 21. For the clarity of figure 1A only the sheaves 44-49 and the pair of cross wires 50, 51 are shown that are located at the port side of the spud carriage assembly 20. At the starboard side the same sheaves 44-49 and cross wires 50, 51 are provided. For illustrative purpose the first cross wire 50 is indicated with a thinner line than the second cross wire 51.

[0030] The first cross wire 50 is connected to the hull 2 at the front of the spud carriage well 5 and runs over one of the upper sheaves 41 of the base frame 21 back to the upper sheave 44 that is above and at front of the spud carriage well 5. The first cross wire 50 subsequently runs freely through the upper sheave holder 40 and over the sheaves 48, 49 that are at the back, above respectively below the spud carriage well 5. Subsequently the first cross wire 50 runs over the lower sheave 42 at the back, and is finally connected to the hull 2.

[0031] The second cross wire 51 at this same port side runs symmetrically with respect to the first cross wire 50. That is, the second cross wire 51 is connected to the hull 2 at the back of the spud carriage well 5 and runs over the other upper sheave 41 of the base frame 21 back to the upper sheave 47 that is above and at the back of the spud carriage well 5. The second cross wire 51 subsequently runs freely through the upper sheave holder 40 and over the sheaves 45, 46 that are at the front, above respectively below the spud carriage well 5. Subsequently the second cross wire 51 runs over the other lower sheave 43 at the front, and is finally connected to the hull 2.

[0032] The cross wires 50, 51 are biased by horizontal displacement of one of the sheaves 44, 47 above the spud carriage well 5 by means of hydraulic cylinders that are not shown. The horizontal displacement of the base frame 21 in direction A is powered by a hydraulic cylinder between the hull 2 and the base frame 21 that is not shown either. The cross wires 50, 51 keep the base frame 21 upright while it is horizontally displaced in direction A by the hydraulic cylinder that is not shown. The base frame 21 can be kept upright by any suitable suspension system of any kind of vessel, wherein the horizontal displacement may be optional.

[0033] The spud carriage assembly 20 comprises an elongate, steel spud pole 60 and a steel spud pole holder 61 for the spud pole 60. The spud pole 60 comprises a tube 65 that may be formed of a series of tube sections, and a pointed end 66. The spud pole holder 61 comprises a tilting frame 62 with a passage 63 for the spud pole 60 and a wedge or any other releasable lock that is not shown to lock the sliding movement of the spud pole 60 through the spud pole holder 61. At the front side the tilting frame 62 is connected to two first supports 64 of the base frame 21 by means of rotary bearings to pivot with respect to the base frame 21 in direction C around a first horizontal pivot axis B. At the free back side the tilting frame 62 is connected to the base frame 21 by means of pins or any other releasable lock.

[0034] The spud pole holder 61 is furthermore provided with a steel yoke 70 having a reverse Y-frame 71 that is at its bottom side connected to the tilting frame 62 by means of rotary bearings to pivot with respect to the tilting frame 62 in direction E around a second horizontal pivot axis D. In this embodiment the first horizontal pivot axis B and the second horizontal pivot axis D are located close above each other because of the size of the bearings, but these pivot axis B, D may also coincide.

[0035] The yoke 70 comprises a spud pole claw 72 at the upper side of the Y-frame 71. The claw 72 tightly engages about half of the circumference of the spud pole 60. A steel closure 73 is pivotably connected to the claw 72. In the open position of the closure 73 the spud pole can enter the claw 72, while in the closed position the entire circumference of the spud pole 60 is slidably enclosed.

[0036] The yoke 70 comprises multiple rails 75 that extend over the elongate back of the Y-frame 71, and a slider 76 that engages and slides along the rails 71. The slider 76 is pivotably connected to two parallel hydraulic cylinders 78 that at their bottom side are pivotably connected to two second supports 77 of the base frame 21 that are positioned below and spaced apart from the first supports 64. The slider 76 is movable along the rails 75 in direction F, wherein at the upper side the sliding movement can be locked and unlocked at the height of the claw 72 by means of pins or any other lock that is not shown in the drawings.

[0037] The yoke 70 comprises two hoisting sheaves 81 on top of the claw 72 and two parallel first hoisting cables 80 running over the sheaves 81. At one end the first hoisting cables 80 are connected to the slider 76 and at the opposite side a clamping assembly 90 is suspended from the first cables 80. The clamping assembly 90 comprises a master clamp 91 and a slave clamp 92 both with semicircular engagement faces 93 that correspond to the circumference of the spud pole 60, and two pairs of parallel tensioning rods 94 that are on both ends pivotably connected to the facing ends of the clamps 91, 92. The tensioning rods 94 form a parallelogram mechanism that imposes a mutual swinging translating movement to the clamps 91, 92, wherein in the outermost mutual distance perpendicular to the spud pole 60 one of the clamps 91, 92 disengages from the spud pole 60. Only the master clamp 91 is connected to the first hoisting cables 80.

[0038] The spud pole assembly 20 comprises a second hoisting cable 82 that runs over a sheave 83 inside the base frame 21. At one end the second hoisting cable 82 is close to the pointed end 66 connected to the spud pole 60, and at the other side the second hoisting cable 82 is connected to a winch on the hull 2 that is not shown. By hauling in or paying out this winch the elongate spud pole 60 is retracted or lowered in vertical direction G.

[0039] In order to perform dredging operations the spud pole 60 is lowered with the pointed end 66 in direction G to stand on or to penetrate the sea bed. The yoke 70 is turned down in direction E by retraction of the hydraulic cylinders 78. This is shown in figure 2A. The first hoisting cables 80 are long enough to hang loosely while connected to the slider 76 and the master clamp 91. The clamping assembly 90 is fixated onto the flat upper surface of the spud pole holder 61 whereby the clamps 91, 92 do not engage the spud pole 60. During the dredging operations the cutter suction dredger 1 reciprocally swings sideways around the point of contact of the spud pole 60 with the sea bed to move the cutter head along curved paths. After each swing the spud carriage assembly 20 is stepwise translated in direction A to move the hull 2 forward or backward with respect to the sea bed. After each full stroke the spud pole 60 is hoisted some meters in direction G to be lowered again after the return movement in direction A. The frequent lowering and hoisting of the spud pole 60 is performed by using the second hoisting cable 82.

[0040] After finishing the dredging operations the spud pole 60 may be turned down towards the hull 2. As shown in figure 2B, the spud pole 60 is then first fully hoisted up by means of the second hoisting cable 82. In this raised position the pointed end 66 of the spud pole is retracted into the base frame 21. Subsequently the yoke 70 is turned upright upwards in direction E by extension of the hydraulic cylinders 78, whereby the claw 72 engages the spud pole 60. The spud pole holder 61 with the spud pole 60 are turned down by retraction of the hydraulic cylinders 78. Subsequently the claw 72 is closed with the closure 73 and the tilting frame 62 is unlocked to allow the yoke 70 and the tilting frame 62 to tilt around the horizontal axis B as one unity together with the spud pole 60. This procedure is executed in reverse order to turn the spud pole 60 upright again.

[0041] In case of failure of the second hoisting cable 82 or the related critical components, the spud carriage assembly 20 has been provided with a backup facility to hoist the spud pole 60. The backup facility is formed by the hydraulic cylinders 78 and the slider 76 that are also used to turn over the spud pole 60, and by the clamping assembly 90 and the first hoisting cables 80 that run over the sheaves 81. When this backup facility is employed, the spud pole assembly 20 is switched from the regular turn over mode to the emergency hoisting mode. In preparation thereof the hydraulic cylinders 78 are extended to erect the yoke 70 and to close its closure 73. During erecting the yoke 70, the clamping assembly 90 remains positioned onto the spud pole holder 61. The pivoting movement of the tilting frame 62 in direction E remains locked. In this position the spud pole assembly 20 is switched over to the emergency hoisting mode by release of the sliding movement of the slider 76 along the rails 71. Subsequently the hydraulic cylinders 78 are fully retracted, causing the clamping assembly 90 to move upwards. In this upward stroke the master clamp 91 is initially hoisted with respect to the slave clamp 92 to engage the spud pole 60, followed by the longer trajectory in which the spud pole 60 is actually hoisted. The clamping assembly 90 enters into a force closed engagement of the spud pole 60. This engagement tightens proportionally with the imposed hoisting force, whereby slipping along the spud pole 60 is prevented. At the end of this upward stroke the hoisted spud pole 60 is temporary fixated by the spud pole holder 61, where after the hydraulic cylinders 78 are extended. In this downward stroke the force closed engagement by the clamping assembly 90 is automatically released and the clamping assembly 90 slides down along the spud pole 60 under its own weight.

[0042] By repeating the abovementioned steps the spud pole 60 is stepwise hoisted, wherein the hoisting distance is each time slightly smaller than the stroke length of the hydraulic cylinders 78. When the spud pole 60 finally also needs to be turned down, the spud pole assembly 20 is switched back again to the turn over mode by locking the slider 76 again at the top after the final extension of the hydraulic cylinders 78. After release of the tilting movement in direction D, the spud pole holder 61 with the spud pole 60 can be turned down as described here before. The backup facility allows the cutter suction dredger 1, or any other vessel with such spud pole assembly 20, to retract its spud pole 60 at any moment. This is necessary when the main facility is temporary down while the spud pole 60 needs to be retracted, for example due to unpredicted weather and sea conditions.

[0043] It is to be understood that the above description is included to illustrate the operation of the preferred embodiments and is not meant to limit the scope of the invention. From the above discussion, many variations will be apparent to one skilled in the art that would yet be encompassed by the claims.

Claims

1. Vessel (1) comprising a hull (2) and a spud pole assembly (20), wherein the spud pole assembly comprises a base frame (21), a spud pole holder (61) that is pivotably connected to the base frame, an elongate spud pole (60) that is guided by the spud pole holder to be hoisted and lowered in its elongate direction with respect to the hull, a first hydraulic cylinder (78) that is at its first side pivotably connected to the base frame (21) and at its operative opposite second side pivotably connected to the spud pole holder (61) to pivot the spud pole holder and the spud pole with respect to the base frame, and a clamping assembly (90) to clamp the spud pole, wherein the spud pole assembly (20) is able to switch between a turn over mode and a hoisting mode, wherein in the turn over mode the position of the pivot between the first side of the hydraulic cylinder (78) and the spud pole holder (61) is fixed with respect to the spud pole holder whereby the extension or retraction of first hydraulic cylinder (78) pivots the spud pole holder (61) and the spud pole (60) with respect to the base frame (21), wherein the clamping assembly is operatively connected to the first side of the first hydraulic cylinder (78), wherein in the hoisting mode the pivot between the first side of the hydraulic cylinder (78) and the spud pole holder (61) is displaceable with respect to the spud pole holder (61) whereby the extension or retraction of the first hydraulic cylinder (78) lowers or hoists the operatively connected clamping assembly (90) with respect to the base frame (21).

2. Vessel (1) according to claim 1, wherein the clamping assembly (20) is operatively connected to the first side of the first hydraulic cylinder (78) by a first hoisting cable (80) that is guided along a hoisting sheave (81) on the spud pole holder (61), wherein the hoisting sheave is located above the clamping assembly (20) and the first side of the first hydraulic cylinder (78).

3. Vessel (1) according to any one of the preceding claims, wherein the spud pole assembly (20) comprises a first rail (75) that is connected to the spud pole holder (61), a slider (76) that is slidable along the first rail, and a first releasable lock between the slider (78) and the first rail (75) to lock the sliding movement (F) of the slider (76) along the first rail (75), wherein the first side of the first hydraulic cylinder (78) is pivotably connected to the slider (76) and the clamping assembly (20) is operatively connected to the slider, wherein in the turn over mode the first lock is locked and in the hoisting mode the first lock is released.

4. Vessel (1) according to any one of the preceding claims, wherein the spud pole holder (61) comprises a tilting frame (62) with a first passage (63) for the spud pole (60) that is pivotably connected to the base frame (21), wherein the spud pole assembly (20) comprises a second releasable lock between the tilting frame (62) and the spud pole (60) to lock the movement of the spud pole in its elongate direction with respect to the tilting frame, and/or wherein the spud pole holder (61) comprises a tilting frame (62) with a first passage (63) for the spud pole (60) that is pivotably connected to the base frame (21), wherein the spud pole assembly (20) comprises a third releasable lock between the tilting frame (62) and the base frame (21) to lock the pivoting movement of the tilting frame with respect to the base frame, and/or wherein the spud pole holder (61) comprises a tilting frame (62) with a first passage (63) for the spud pole (60) that is pivotably connected to the base frame (21), and a yoke (70) that is pivotably connected to the tilting frame (62) or to the base frame (62), wherein the yoke (70) comprises an engagement end (72) for engagement of the spud pole (60) spaced apart from the tilting frame (62), wherein the first side of the first hydraulic cylinder (78) is pivotably connected to the yoke, wherein preferably the clamping assembly (90) is reciprocally movable by the first hydraulic cylinder (78) between the tilting frame (62) and the engagement end (72) of the yoke (70).

5. Vessel (1) according to claims 2 and 4, wherein the hoisting sheave (81) is mounted to the yoke (70), wherein preferably the clamping assembly (90) is reciprocally movable by the first hydraulic cylinder (78) between the tilting frame (62) and the engagement end (72) of the yoke (70).

6. Vessel (1) according to any one of the preceding claims, wherein the clamping assembly (90) comprises a passage for the spud pole (60), which passage is bounded by a first clamping face (91, 93) and a second clamping face (92, 93) that are opposite to each other transverse to the longitudinal direction of the spud pole (60), wherein the clamping assembly (90) is movable between a first position and a second position with respect to the spud pole (60), wherein in the first position the first clamping face (91, 93) and the second clamping face (92, 93) together keep a clearance with respect to the spud pole (60) and wherein in the second position the first clamping face (91, 93) and the second clamping face (92, 93) together tightly engage the spud pole (60), wherein preferably in the second position the first clamping face (91, 93) is raised with respect to the second clamping face (92, 93) in the longitudinal direction of the spud pole (60) .

7. Vessel (1) according to claim 6, wherein the clamping assembly (90) comprises a master clamp (91) with the first clamping face (91, 93), a slave clamp (92) with the second clamping face (92, 93) and pairs of parallel tensioning rods (94) that are pivotably connected to the master clamp (92) and the slave clamp (93) to form a parallelogram mechanism therewith.

8. Vessel (1) according to any one of the preceding claims, wherein in the turn over mode the spud pole holder (61) with the spud pole (60) is pivotable by the first hydraulic cylinder (78) between a vertical position in which the spud pole (60) extends substantially vertical and horizontal position in which the spud pole (60) extends substantially horizontal.

9. Vessel (1) according to any one of the preceding claims, wherein in the hoisting mode the center line of the first hydraulic cylinder (78) extends under an angle of less than 20 degrees with respect to the center line of the spud pole (60).

10. Vessel (1) according to any one of the preceding claims, wherein in the hoisting mode the clamping assembly (90) is hoisted by retraction of the first hydraulic cylinder (78).

11. Vessel (1) according to any one of the preceding claims, wherein the spud pole (60) is connected to or suspended from a second hoisting cable (82) that is connected to a hoisting winch.

12. Vessel (1) according to any one of the preceding claims, wherein the hull (2) comprises an elongate well (5), wherein the base frame (21) is movable along second rails (7) that extend horizontally along the well, wherein the vessel comprises a second hydraulic cylinder between the hull (2) and the base frame (21) to move the base frame along the second rails (7).

13. Vessel (1) according to any one of the preceding claims, wherein the vessel (1) is a dredging vessel.

14. Method for hoisting an elongate spud pole (60) of a vessel (1), wherein the vessel comprises a hull (2) and a spud pole assembly (20), wherein the spud pole assembly comprises a base frame, a spud pole holder (61) that is pivotably connected to the base frame, wherein the spud pole (60) is guided by the spud pole holder to be hoisted and lowered in its elongate direction with respect to the hull, a first hydraulic cylinder (78) that is at its first side pivotably connected to the base frame (21) and at its operative opposite second side pivotably connected to the spud pole holder (61) to pivot the spud pole holder and the spud pole with respect to the base frame, and a clamping assembly (90) to clamp the spud pole, wherein the spud pole assembly (20) is able to switch between a turn over mode and a hoisting mode, wherein in the turn over mode the position of the pivot between the first side of the hydraulic cylinder (78) and the spud pole holder (61) is fixed with respect to the spud pole holder whereby the extension or retraction of first hydraulic cylinder (78) pivots the spud pole holder (61) and the spud pole (60) with respect to the base frame (21), wherein the clamping assembly is operatively connected to the first side of the first hydraulic cylinder (78), wherein in the hoisting mode the pivot between the first side of the hydraulic cylinder (78) and the spud pole holder (61) is displaceable with respect to the spud pole holder (61) whereby the extension or retraction of the first hydraulic cylinder (78) lowers or hoists the operatively connected clamping assembly (20) with respect to the base frame (21), wherein the method comprises switching to the hoisting mode when the spud pole (60) is turned upright, and hoisting the clamping assembly (90) by means of the first hydraulic cylinder (78) after engagement of the spud pole (60).

15. Method according to claim 14, wherein the clamping assembly (90) comprises a passage for the spud pole (60), which passage is bounded by a first clamping face (91, 93) and a second clamping face (92, 93) that are located opposite to each other transverse to the longitudinal direction of the spud pole (60), wherein the first hydraulic cylinder (78) is operatively connected to the first clamping face (91, 93), wherein the method comprises hoisting the first clamping face (91, 93) with respect to the second clamping face (92, 93) in the longitudinal direction of the spud pole (60) whereby the first clamping face (91, 93) and the second clamping face (92, 93) together tightly engage the spud pole (60) to enter in a force close engagement with it.

Ansprüche

1. Schiff (1) mit einem Rumpf (2) und einer Bohrstangenanordnung (20), wobei die Bohrstangenanordnung einen Basisrahmen (21), eine Bohrstangenhalterung (61), die schwenkbar mit dem Basisrahmen verbunden ist, eine längliche Bohrstange (60), die durch die Bohrstangenhalterung so geführt wird, dass sie in ihrer länglichen Richtung in Bezug auf den Rumpf angehoben und abgesenkt werden kann, einen ersten hydraulischen Zylinder (78), der an seiner ersten Seite schwenkbar mit dem Basisrahmen (21) verbunden ist und an seiner wirksamen gegenüberliegenden zweiten Seite schwenkbar mit der Bohrstangenhalterung (61) verbunden ist, um die Bohrstangenhalterung und die Bohrstange in Bezug auf den Basisrahmen zu schwenken, und eine Klemmanordnung (90) aufweist, um die Bohrstange einzuklemmen, wobei die Bohrstangenanordnung (20) in der Lage ist, zwischen einem Umdrehmodus und einem Anhebemodus umzuschalten, wobei in dem Umdrehmodus die Position des Drehpunkts zwischen der ersten Seite des hydraulischen Zylinders (78) und der Bohrstangenhalterung (61) in Bezug auf die Bohrstangenhalterung fixiert ist, wodurch das Ausfahren oder Zurückziehen des ersten hydraulischen Zylinders (78) die Bohrstangenhalterung (61) und die Bohrstange (60) in Bezug auf den Basisrahmen (21) schwenkt, wobei die Klemmanordnung wirksam mit der ersten Seite des ersten hydraulischen Zylinders (78) verbunden ist, wobei in dem Anhebemodus der Drehpunkt zwischen der ersten Seite des hydraulischen Zylinders (78) und der Bohrstangenhalterung (61) in Bezug auf die Bohrstangenhalterung (61) verschiebbar ist, wodurch das Ausfahren oder Zurückziehen des ersten hydraulischen Zylinders (78) die wirksam verbundene Klemmanordnung (90) in Bezug auf den Basisrahmen (21) absenkt oder anhebt.

2. Schiff (1) gemäß Anspruch 1, bei dem die Klemmanordnung (20) durch ein erstes Anhebekabel (80), das entlang einer Anheberolle (81) geführt wird, an der Bohrstangenhalterung (61) wirksam mit der ersten Seite des ersten hydraulischen Zylinders (78) verbunden ist, wobei die Anheberolle sich oberhalb der Klemmanordnung (20) und der ersten Seite des ersten hydraulischen Zylinders (78) befindet.

3. Schiff (1) gemäß einem der vorherigen Ansprüche, bei dem die Bohrstangenanordnung (20) eine erste Schiene (75), die mit der Bohrstangenhalterung (61) verbunden ist, ein Gleitelement (76), das entlang der ersten Schiene gleitfähig ist, und eine erste lösbare Sperre zwischen dem Gleitelement (78) und der ersten Schiene (75) aufweist, um die Gleitbewegung (F) des Gleitelements (76) entlang der ersten Schiene (75) zu sperren, wobei die erste Seite des ersten hydraulischen Zylinders (78) schwenkbar mit dem Gleitelement (76) verbunden ist und die Klemmanordnung (20) wirksam mit dem Gleitelement verbunden ist, wobei in dem Umdrehmodus die erste Sperre gesperrt ist und in dem Anhebemodus die erste Sperre gelöst ist.

4. Schiff (1) gemäß einem der vorherigen Ansprüche, bei dem die Bohrstangenhalterung (61) einen Neigungsrahmen (62) mit einem ersten Durchgang (63) für die Bohrstange (60) aufweist, der schwenkbar mit dem Basisrahmen (21) verbunden ist, wobei die Bohrstangenanordnung (20) eine zweite lösbare Sperre zwischen dem Neigungsrahmen (62) und der Bohrstange (60) aufweist, um die Bewegung der Bohrstange in ihrer länglichen Richtung in Bezug auf den Neigungsrahmen zu sperren, und/oder wobei die Bohrstangenhalterung (61) einen Neigungsrahmen (62) mit einem ersten Durchgang (63) für die Bohrstangenanordnung (60) aufweist, der schwenkbar mit dem Basisrahmen (21) verbunden ist, wobei die Bohrstangenanordnung (20) eine dritte lösbare Sperre zwischen dem Neigungsrahmen (62) und dem Basisrahmen (21) aufweist, um die Schwenkbewegung des Neigungsrahmens in Bezug auf den Basisrahmen zu sperren, und/oder wobei die Bohrstangenhalterung (61) einen Neigungsrahmen (62) mit einem ersten Durchgang (63) für die Bohrstange (60) aufweist, der schwenkbar mit dem Basisrahmen (21) verbunden ist, sowie einen Bügel (70), der schwenkbar mit dem Neigungsrahmen (62) oder mit dem Basisrahmen (62) verbunden ist, wobei der Bügel (70) ein Ineingriffnahmeende (72) zur Ineingriffnahme der Bohrstange (60) von dem Neigungsrahmen (62) beabstandet aufweist, wobei die erste Seite des ersten hydraulischen Zylinders (78) schwenkbar mit dem Bügel verbunden ist, wobei vorzugsweise die Klemmanordnung (90) durch den ersten hydraulischen Zylinder (78) zwischen dem Neigungsrahmen (62) und dem Ineingriffnahmeende (72) des Bügels (70) hin- und herbewegbar ist.

5. Schiff (1) gemäß Anspruch 2 und 4, bei dem die Anheberolle (81) an dem Bügel (70) befestigt ist, wobei vorzugsweise die Klemmanordnung (90) durch den ersten hydraulischen Zylinder (78) zwischen dem Neigungsrahmen (62) und dem Ineingriffnahmeende (72) des Bügels (70) hin- und herbewegbar ist.

6. Schiff (1) gemäß einem der vorherigen Ansprüche, bei dem die Klemmanordnung (90) einen Durchgang für die Bohrstange (60) aufweist, wobei dieser Durchgang durch eine erste Klemmfläche (91, 93) und eine zweite Klemmfläche (92, 93) begrenzt ist, die einander quer zu der Längsrichtung der Bohrstange (60) gegenüberliegen, wobei die Klemmanordnung (90) zwischen einer ersten Position und einer zweiten Position in Bezug auf die Bohrstange (60) bewegbar ist, wobei in der ersten Position die erste Klemmfläche (91, 93) und die zweite Klemmfläche (92, 93) gemeinsam einen Zwischenraum in Bezug auf die Bohrstange (60) einhalten, und wobei in der zweiten Position die erste Klemmfläche (91, 93) und die zweite Klemmfläche (92, 93) zusammen die Bohrstange (60) eng in Eingriff nehmen, wobei vorzugsweise in der zweiten Position die erste Klemmfläche (91, 93) in Bezug auf die zweite Klemmfläche (92, 93) in der Längsrichtung der Bohrstange (60) erhöht ist.

7. Schiff (1) gemäß Anspruch 6, bei dem die Klemmanordnung (90) eine Hauptklemme (91) mit einer ersten Klemmfläche (91, 93), eine Nebenklemme (92) mit einer zweiten Klemmfläche (92, 93) und Paare paralleler Spannstäbe (94) aufweist, die schwenkbar mit der Hauptklemme (92) und der Nebenklemme (93) verbunden sind, um mit denselben einen Parallelogrammmechanismus auszubilden.

8. Schiff (1) gemäß einem der vorherigen Ansprüche, bei dem in dem Umdrehmodus die Bohrstangenhalterung (61) mit der Bohrstange (60) durch den ersten hydraulischen Zylinder (78) zwischen einer vertikalen Position, in der sich die Bohrstange (60) im Wesentlichen vertikal erstreckt, und einer horizontalen Position schwenkbar ist, in der sich die Bohrstange (60) im Wesentlichen horizontal erstreckt.

9. Schiff (1) gemäß einem der vorherigen Ansprüche, bei dem sich in dem Anhebemodus die Mittellinie des ersten hydraulischen Zylinders (78) unter einem Winkel von weniger als 20 Grad in Bezug auf die Mittellinie der Bohrstange (60) erstreckt.

10. Schiff (1) gemäß einem der vorherigen Ansprüche, bei dem in dem Anhebemodus die Klemmanordnung (90) durch Zurückziehen des ersten hydraulischen Zylinders (78) angehoben wird.

11. Schiff (1) gemäß einem der vorherigen Ansprüche, bei dem die Bohrstange (60) mit einem zweiten Anhebekabel (82), das mit einer Anhebewinde verbunden ist, verbunden ist oder von demselben aufgehängt ist.

12. Schiff (1) gemäß einem der vorherigen Ansprüche, bei dem der Rumpf (2) eine längliche Mulde (5) aufweist, wobei der Basisrahmen (21) entlang zweiter Schienen (7) bewegbar ist, die sich horizontal entlang der Mulde erstrecken, wobei das Schiff einen zweiten hydraulischen Zylinder zwischen dem Rumpf (2) und dem Basisrahmen (21) aufweist, um den Basisrahmen entlang der zweiten Schienen (7) zu bewegen.

13. Schiff (1) gemäß einem der vorherigen Ansprüche, wobei das Schiff (1) ein Baggerschiff ist.

14. Verfahren zum Anheben einer länglichen Bohrstange (60) eines Schiffs (1), wobei das Schiff einen Rumpf (2) und eine Bohrstangenanordnung (20) aufweist, wobei die Bohrstangenanordnung einen Basisrahmen, eine Bohrstangenhalterung (61), die schwenkbar mit dem Basisrahmen verbunden ist, wobei die Bohrstange (60) durch die Bohrstangenhalterung so geführt wird, dass die in ihrer länglichen Richtung in Bezug auf den Rumpf angehoben und abgesenkt werden kann, einen ersten hydraulischen Zylinder (78), der an seiner ersten Seite schwenkbar mit dem Basisrahmen (21) verbunden ist und an seiner wirksamen gegenüberliegenden zweiten Seite schwenkmäßig mit der Bohrstangenhalterung (61) verbunden ist, um die Bohrstangenhalterung und die Bohrstange in Bezug auf den Basisrahmen zu schwenken, und eine Klemmanordnung (90) aufweist, um die Bohrstange einzuklemmen, wobei die Bohrstangenanordnung (20) in der Lage ist, zwischen einem Umdrehmodus und einem Anhebemodus umzuschalten, wobei in dem Umdrehmodus die Position des Drehpunkts zwischen der ersten Seite des hydraulischen Zylinders (78) und der Bohrstangenhalterung (61) in Bezug auf die Bohrstangenhalterung fixiert ist, wodurch das Ausfahren oder Zurückziehen des ersten hydraulischen Zylinders (78) die Bohrstangenhalterung (61) und die Bohrstange (60) in Bezug auf den Basisrahmen (21) schwenkt, wobei die Klemmanordnung wirksam mit der ersten Seite des ersten hydraulischen Zylinders (78) verbunden ist, wobei in dem Anhebemodus der Drehpunkt zwischen der ersten Seite des hydraulischen Zylinders (78) und der Bohrstangenhalterung (61) in Bezug auf die Bohrstangenhalterung (61) verschiebbar ist, wodurch das Ausfahren oder Zurückziehen des ersten hydraulischen Zylinders (78) die wirksam verbundene Klemmanordnung (20) in Bezug auf den Basisrahmen (21) absenkt oder anhebt, wobei das Verfahren ein Umschalten in den Anhebemodus, wenn die Bohrstange (60) aufrecht gedreht ist, und ein Anheben der Klemmanordnung (90) mittels des ersten hydraulischen Zylinders (78) nach Ineingriffnahme der Bohrstange (60) aufweist.

15. Verfahren gemäß Anspruch 14, bei dem die Klemmanordnung (90) einen Durchgang für die Bohrstange (60) aufweist, wobei dieser Durchgang durch eine erste Klemmfläche (91, 93) und eine zweite Klemmfläche (92, 93) begrenzt ist, die einander quer zu der Längsrichtung der Bohrstange (60) gegenüberliegen, wobei der erste hydraulische Zylinder (78) wirksam mit der ersten Klemmfläche (91, 93) verbunden ist, wobei das Verfahren ein Anheben der ersten Klemmfläche (91, 93) in Bezug auf die zweite Klemmfläche (92, 93) in der Längsrichtung der Bohrstange (60) aufweist, wodurch die erste Klemmfläche (91, 93) und die zweite Klemmfläche (92, 93) zusammen die Bohrstange (60) eng in Eingriff nehmen, um in eine Kraftschließineingriffnahme mit derselben einzutreten.

Revendications

1. Navire (1) comprenant une coque (2) et un ensemble de pieu d'ancrage (20), dans lequel l'ensemble de pieu d'ancrage comprend un bâti de base (21), un support de pieu d'ancrage (61) qui est raccordé de manière pivotante au bâti de base, un pieu d'ancrage allongé (60) qui est guidé par le support de pieu d'ancrage pour être levé et abaissé dans sa direction allongée par rapport à la coque, un premier cylindre hydraulique (78) qui est, au niveau de son premier côté, raccordé de manière pivotante au bâti de base (21) et au niveau son second côté opposé opérationnel, raccordé de manière pivotante au support de pieu d'ancrage (61) pour faire pivoter le support de pieu d'ancrage et le pieu d'ancrage par rapport au bâti de base, et un ensemble de serrage (90) pour serrer le pieu d'ancrage, dans lequel l'ensemble de pieu d'ancrage (20) peut commuter entre un mode de retournement et un mode de levage, dans lequel, dans le mode de retournement, la position du pivot entre le premier côté du cylindre hydraulique (78) et le support de pieu d'ancrage (61) est fixe par rapport au support de pieu d'ancrage, moyennant quoi l'extension ou la rétraction du premier cylindre hydraulique (78) fait pivoter le support de pieu d'ancrage (61) et le pieu d'ancrage (60) par rapport au bâti de base (21), dans lequel :
l'ensemble de serrage est raccordé de manière opérationnelle au premier côté du premier cylindre hydraulique (78), dans lequel, dans le mode de levage, le pivot entre le premier côté du cylindre hydraulique (78) et le support de pieu d'ancrage (61) est déplaçable par rapport au support de pieu d'ancrage (61), moyennant quoi l'extension ou la rétraction du premier cylindre hydraulique (78) abaisse ou lève l'ensemble de serrage (90) raccordé de manière opérationnelle par rapport au bâti de base (21).

2. Navire (1) selon la revendication 1, dans lequel l'ensemble de serrage (20) est raccordé de manière opérationnelle au premier côté du premier cylindre hydraulique (78) par un premier câble de levage (80) qui est guidé le long d'une poulie de levage (81) sur le support de pieu d'ancrage (61), dans lequel la poulie de levage est positionnée au-dessus de l'ensemble de serrage (20) et du premier côté du premier cylindre hydraulique (78) .

3. Navire (1) selon l'une quelconque des revendications précédentes, dans lequel l'ensemble de pieu d'ancrage (20) comprend un premier rail (75) qui est raccordé au support de pieu d'ancrage (61), une glissière (76) qui peut coulisser le long du premier rail, et un premier verrou libérable entre la glissière (78) et le premier rail (75) afin de bloquer le mouvement coulissant (F) de la glissière (76) le long du premier rail (75), dans lequel le premier côté du premier cylindre hydraulique (78) est raccordé de manière pivotante à la glissière (76) et l'ensemble de serrage (20) est raccordé de manière opérationnelle à la glissière, dans lequel, dans le mode de retournement, le premier verrou est verrouillé et dans le mode de levage le premier verrou est débloqué.

4. Navire (1) selon l'une quelconque des revendications précédentes, dans lequel le support de pieu d'ancrage (61) comprend un bâti d'inclinaison (62) avec un premier passage (63) pour le pieu d'ancrage (60) qui est raccordé de manière pivotante au bâti de base (21), dans lequel l'ensemble de pieu d'ancrage (20) comprend un deuxième verrou libérable entre le bâti d'inclinaison (62) et le pieu d'ancrage (60) pour bloquer le déplacement du pieu d'ancrage dans sa direction allongée par rapport au bâti d'inclinaison, et/ou dans lequel le support de pieu d'ancrage (61) comprend un bâti d'inclinaison (62) avec un premier passage (63) du pieu d'ancrage (60) qui est raccordé de manière pivotante au bâti de base (21), dans lequel l'ensemble de pieu d'ancrage (20) comprend un troisième verrou libérable entre le bâti d'inclinaison (62) et le bâti de base (21) pour bloquer le mouvement pivotant du bâti d'inclinaison par rapport au bâti de base, et/ou dans lequel le support de pieu d'ancrage (61) comprend un bâti d'inclinaison (62) avec un premier passage (63) pour le pieu d'ancrage (60) qui est raccordé de manière pivotante au bâti de base (21), et une culasse (70) qui est raccordée de manière pivotante au bâti d'inclinaison (62) ou au bâti de base (62), dans lequel la culasse (70) comprend une extrémité de mise en prise (72) pour la mise en prise du pieu d'ancrage (60) espacé du bâti d'inclinaison (62), dans lequel le premier côté du premier cylindre hydraulique (78) est raccordé de manière pivotante à la culasse, dans lequel de préférence l'ensemble de serrage (90) est mobile selon un mouvement de va-et-vient par le premier cylindre hydraulique (78) entre le bâti d'inclinaison (62) et l'extrémité de mise en prise (72) de la culasse (70).

5. Navire (1) selon les revendications 2 et 4, dans lequel la poulie de levage (81) est montée sur la culasse (70), dans lequel de préférence l'ensemble de serrage (90) est mobile selon un mouvement de va-et-vient grâce au premier cylindre hydraulique (78), entre le bâti d'inclinaison (62) et l'extrémité de mise en prise (72) de la culasse (70).

6. Navire (1) selon l'une quelconque des revendications précédentes, dans lequel l'ensemble de serrage (90) comprend un passage pour le pieu d'ancrage (60), lequel passage est délimité par une première face de serrage (91, 93) et une seconde face de serrage (92, 93) qui sont opposées entre elles, transversalement par rapport à la direction longitudinale du pieu d'ancrage (60), dans lequel l'ensemble de blocage (90) est mobile entre une première position et une seconde position par rapport au pieu d'ancrage (60), dans lequel, dans la première position, la première face de serrage (91, 93) et la seconde face de serrage (92, 93) maintiennent ensemble un jeu par rapport au pieu d'ancrage (60) et dans lequel, dans la seconde position, la première face de serrage (91, 93) et la seconde face de serrage (92, 93) mettent en prise ensemble de manière étanche le pieu d'ancrage (60), dans lequel de préférence, dans la seconde position, la première face de serrage (91, 93) est relevée par rapport à la seconde face de serrage (92, 93) dans la direction longitudinale du pieu d'ancrage (60).

7. Navire (1) selon la revendication 6, dans lequel l'ensemble de serrage (90) comprend une pince principale (91) avec la première face de serrage (91, 93) et une pince auxiliaire (92) avec la seconde face de serrage (92, 93) et des paires de tiges de tension (94) parallèles qui sont raccordées de manière pivotante à la pince principale (92) et à la pince auxiliaire (93) afin de former un mécanisme parallélogramme avec ces dernières.

8. Navire (1) selon l'une quelconque des revendications précédentes, dans lequel, dans le mode de retournement, le support de pieu d'ancrage (61) avec le pieu d'ancrage (60) peut pivoter grâce au premier cylindre hydraulique (78) entre une position verticale dans laquelle le pieu d'ancrage (60) s'étend sensiblement dans la position verticale et une position horizontale, dans laquelle le pieu d'ancrage (60) s'étend de manière sensiblement horizontale.

9. Navire (1) selon l'une quelconque des revendications précédentes, dans lequel, dans le mode de levage, la ligne centrale du premier cylindre hydraulique (78) s'étend sous un angle inférieur à 20 degrés par rapport à la ligne centrale du pieu d'ancrage (60).

10. Navire (1) selon l'une quelconque des revendications précédentes, dans lequel, dans le mode de levage, l'ensemble de serrage (90) est levé par la rétraction du premier cylindre hydraulique (78).

11. Navire (1) selon l'une quelconque des revendications précédentes, dans lequel le pieu d'ancrage (60) est raccordé ou suspendu à un second câble de levage (82) qui est raccordé à un treuil de levage.

12. Navire (1) selon l'une quelconque des revendications précédentes, dans lequel la coque (2) comprend un puits allongé (5), dans lequel le bâti de base (21) est mobile le long de seconds rails (7) qui s'étendent horizontalement le long du puits, où le navire comprend un second cylindre hydraulique entre la coque (2) et le bâti de base (21) afin de déplacer le bâti de base le long des seconds rails (7).

13. Navire (1) selon l'une quelconque des revendications précédentes, où le navire (1) est un navire de dragage.

14. Procédé pour lever un pieu d'ancrage (60) allongé d'un navire (1), où le navire comprend une coque (2) et un ensemble de pieu d'ancrage (20), où l'ensemble de pieu d'ancrage comprend un bâti de base, un support de pieu d'ancrage (61) qui est raccordé de manière pivotante au bâti de base, où le pieu d'ancrage (60) est guidé par le support de pieu d'ancrage pour être levé et abaissé dans sa direction allongée par rapport à la coque, un premier cylindre hydraulique (78) qui est, au niveau de son premier côté, raccordé de manière pivotante au bâti de base (21) et au niveau de son second côté opposé opérationnel, raccordé de manière pivotante au support de pieu d'ancrage (61) pour faire pivoter le support de pieu d'ancrage et le pieu d'ancrage par rapport au bâti de base, et un ensemble de serrage (90) pour serrer le pieu d'ancrage, où l'ensemble de pieu d'ancrage (20) peut commuter entre un mode de retournement et un mode de levage, où, dans le mode de retournement, la position du pivot entre le premier côté du cylindre hydraulique (78) et le support de pieu d'ancrage (61) est fixe par rapport au support de pieu d'ancrage, moyennant quoi l'extension ou la rétraction du premier cylindre hydraulique (78) fait pivoter le support de pieu d'ancrage (61) et le pieu d'ancrage (60) par rapport au bâti de base (21), dans lequel l'ensemble de serrage est raccordé de manière opérationnelle au premier côté du premier cylindre hydraulique (78), où, dans le mode de levage, le pivot entre le premier côté du cylindre hydraulique (78) et le support de pieu d'ancrage (61) est déplaçable par rapport au support de pieu d'ancrage (61), moyennant quoi l'extension ou la rétraction du premier cylindre hydraulique (78) abaisse ou lève l'ensemble de serrage (20) raccordé de manière opérationnelle par rapport au bâti de base (21), où le procédé comprend l'étape consistant à commuter vers le mode de levage, lorsque le pieu d'ancrage (60) est tourné vers le haut, et lever l'ensemble de serrage (90) au moyen du premier cylindre hydraulique (78) après la mise en prise du pieu d'ancrage (60) .

15. Procédé selon la revendication 14, dans lequel l'ensemble de serrage (90) comprend un passage pour le pieu d'ancrage (60), lequel passage est délimité par une première face de serrage (91, 93) et une seconde face de serrage (92, 93) qui sont positionnées à l'opposé l'une de l'autre, transversalement par rapport à la direction longitudinale du pieu d'ancrage (60), dans lequel le premier cylindre hydraulique (78) est raccordé de manière opérationnelle à la première face de serrage (91, 93), où le procédé comprend l'étape consistant à lever la première face de serrage (91, 93) par rapport à la seconde face de serrage (92, 93) dans la direction longitudinale du pieu d'ancrage (60), moyennant quoi la première face de serrage (91, 93) et la seconde face de serrage (92, 93) mettent en prise ensemble, de manière étanche, le pieu d'ancrage (60) pour entrer en mise en prise proche à force avec ce dernier.

Drawing