DE1456246A1 - Device for mooring tankers to a supply buoy - Google Patents

Description

DR.-INO. BY KREISLER DR.-ING. SCHÖNWALD DR.-INO. TH. MEYER DIt. FUES

COLOGNE 1, DEICHMANNHAUS

B 83 597 H / 6p * ² 27 U.

P 14 56 246.0 Seh-Eb / «*

BP TANKER COHPASTf UMTTED, Britannia Bouse, Finabury Circus, London E.C.2, England «

Vorrichtuns sun mooring tankers at a Supply buoy.

The invention relates to a device for mooring Twilcschiffea ax of a supply buoy by means of an arm which is arranged on the buoy and can be swiveled, among other things, by 60 °.

Kit will be the previously known devices of this type Tankers at a supply buoy featgeaiacht, what with the construction of so-called super tankers, i.e. tankers with More than 50,000 t and more is often necessary because ports Such vessels do not often moor with a deep supernatural depth sur are available

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Which has already been given to resolve these difficulties Supply buoys have devices that move the ship depending on the tides and currents of the water or wind in every corner around the buoy allow around.

Such devices with a single one are already known Pestmacherleinsn, with two mooring lines and also such with two lines »which merged into one in front of the buoy will. The improvement of a device of the last-mentioned type is the object of the present invention. Included it concerns eloh not only among other things the appropriate association of Fostmacherleln with the connecting rope to the DoJe, but also about the selection of the correct lengths for the mentioned Leashes or the rope and finally the appropriate one Dimensioning and installation of a connector opposite the bow of the ship. Apparently they have long lines from 45-9Om the advantage of considerable elasticity »see above that relatively little asphalt movement without excessive Stress from such lines can be absorbed, but also the kachteil that a moving ship receives quite considerable kinetic energy if it accidentally moves in the direction of the buoy and in this case the buoy or the ship could be severely damaged. Even if the moving ship moves past the buoy, it gets it at the end when using long plague tether lines its range of motion has such great kinetic energies that the lines and thus also the buoy exert strong pulling forces « be set before the Sohiff comes to a stop

If, on the other hand, a very short line of, for example, 9 - Id η length is used, the ship can advantageously not generate any great kinetic energies due to the influence of currents. However, there is a disadvantage with short lines • Little elasticity, but also not a noteworthy one

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The slack provides a pretension, so that the line is calibrated very suddenly tightens and is then torn out of the water If you can use mooring lines for a very long time, there is no risk of this either.

It is also already known that “a ship is two long ones To keep mooring lines »which are either close to the bow * Y <stigt or attack significantly behind the bow. Sa * of the last-mentioned type of fastening has the advantage of better elasticity in connection with that for short ones The advantage called lines »that the ship cannot receive any great kinetic energy» before the ropes are stressed will. Also known are two short mooring lines attached close to the bow with or without a short connecting rope for attachment to a rocking arm that supports the tank line, but which is not attached to a buoy but to a is rotatably arranged on the seabed stationary supply system and at the same time to support the ship leading supply pipes is used. BoI of this device thus play the problems on which the invention is based does not matter »because the ship in question must necessarily be kept away from the supply station in question muQ.

Tests have shown when using long mooring lines » that under the action of the tides and other currents a mutual entanglement of the lines is inevitable 1st and these entanglements do not cause any difficulties, but can dissolve again by themselves «if the Lines where they are separated enough »that is, attached behind the bow of the ship and thereby in when pulling forces occur are able to »break away from each other. Well-known connectors » whose eyelets are rotatably arranged »could favor this desired process »but only under the prerequisite »that the connected

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«Rushes are free of twisting forces. It is therefore much more advantageous to use a connector, whose eyelets were only attached to it together with both of them Being able to turn mooring lines, in front of you Bofostigungsseil zur Buje «while the two eyelets of the festival * Maker's lines only against each other in the common plane. can be swiveled · If the mooring lines and the connecting rope are taut, the connecting rope is in any case Verwindungsfroi and the two Festnacherleinen become common turn the swivel connector until the mooring lines are in the same condition and in the same Have returned to the position in which they were previously twisted and were fastened without tension "

With these findings that long mooring lines have the advantages of elasticity and when mooring significantly ter the bow have the advantages of low kinetic energies, which are only possible with short individual lines and due to the described properties of connectors with several eyelets that can only be rotated together around an axis, as well as with the idea that such a connector Can't knock far out of the water if you have a buoy with a swivel arm on the one hand and on the other Long-term use is made to solve the problem Stollen task proposed according to the invention that to connect the two Fe3troacherleinen with the connection rope serves as a connecting piece that is provided with a rotating ring and two eyelets pivotably arranged thereon, and that the two feather lines are attached substantially behind the bow lying points are attached and that also the connecting piece with the comparatively much shorter connecting ball in addition to the buoy with a varple line if necessary The hanging mooring lines are held • Prevents the pivot part from sinking under the ship.

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Such a Varplelne can be loosened "by an un" to report useful stress * On the other hand, however, it is desirable to adjust the length of the warpins so that because the connector cannot get under the ship under any circumstances achieved advantages are obvious "

An embodiment of the device according to the invention 1st shown in the drawing

Show it*

Pig. 1 in a representation of the top of the hat «in * supply buoy Btit the bow "Ines ship and

Fig. 2 shows the plan view of the connecting piece according to the invention the proposed device «

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1, the ship 1 is fastened to a supply buoy 2, which supports a swivel arm 5 which can be rotated about a vertical axis. The swivel arm 5 ends in an ob «6 to which one end of a rope 3 is attached by means of a shackle 4. The swivel arm 5 is provided with a rotating ring (not shown) which enables the rope 3 to rotate around its axis · twisting the other end of the rope J) 1st Nittel a connection pieces 8 old the two Festnacherlelnen 9 and IO connected at the connection piece is also attached a $ 17 · Warpleine

The connector 8, which is shown in FIG. 2 is shown in more detail, consists of an axis 20 with eyelets 22 and 23 at the ends set and a sleeve 24 rotatably arranged on this axis old eyelets 25 and 2δ. The connection piece 6 is with the rope 3 on the eyelet 2? connected by the shackle 7, rlt d ^ r Warpleine 17 at aer eyelet through the shackle 18 and the old Festrnacherlelnen 9 * 2-0 at the eyelets 25, 25 is defined by the shackle 11, 12. Vonn the anchorage is in use, is of The tension in the mooring lines 9 and 10 is taken up by a stop flange 21 which is welded to the axle 20 If there is no load, the stops 27 and 23 prevent the sleeve 24 from falling down from the other end of the connecting piece.

A Sohlff can be attached to the supply buoy by the following Procedure to be fixed 1

Since Sohlff drives into the iföho of the buoy, whereupon the V-arpleine 17 is picked up and attached to a capstan 19 at the bow Then Sohlff is maneuvered against the buoy until the Pestmaoh «rlein # n 9,10 recorded by dl · Klüsen 15, 16

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can be pulled and attached to the capstans 13 »I ^, those on the starboard and port sides of the ship behind the foredeck · Know the mooring lines are attached, the warline can be loosened.

While the ship in the manner described against the When the buoy is being maneuvered, the warline 17 can be located under the Twist stress. The rotatable sleeve 24 and dl « Axis 20 of the connecting piece 3 enable this twist to be transmitted to the rope 3 without the other lines become entangled Way to twist freely

Venn the ship moored according to Fig. 1 seeks to Moving away from buoy 2 will be the long mooring lines stretched and therefore absorb the energy

When the direction of the wind and tide changes slowly, the ship will move around the buoy This movement is caused by the rotation of the swivel arm 5 ujj erases its vertical axis, so that the ship always seeks to move away from the buoy, which Movement is prevented in the manner described above.

On the other hand, a sudden sharp change in the direction of the wind and / or the tide can cause the the ship 1 moves towards the buoy 2, so that the Slacken the mooring lines 9 and 10. How fig I seist the ship can be compared to the length of the Festmaoherleinen only move a short distance before it collides with the buoy. That means the ship develop only a small amount of force before the "together * tofl

can·

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Also to be only a ver ^ UltnisnäSig small amount of energy needs · aufftenonmen * if 4as ship * s the buoy passes and reaches the end of its path of movement in a new angular position ·

The Varpleine 17 can be loosened to avoid a useless Avoid using the same · However, it is wjßn · worth seeing «adjust the varpleine so that the pre-binding piece S did not get under the ship «if the Mooring lines

The movement of a moored ship is such that the Fixed mooring lines can chafe the bow and this results in undesirable wear. to close «can the corresponding parts of the mooring line * lines can be replaced by wire cables or chains

For the transfer of the cargo to and from the tanker, a pipeline is expediently laid under water "the end of which is connected to the buoy. This end consists of a swivel joint" through which the pipeline can be connected to the tanker 5 are rotated "so Dao moved di.9 connection between the ship and the buoy check bit dea Sehiff around us dim buoy ·"

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Claims (1)

Device iuin Pe st make tankers attached to a supply buoy by means of an arm that is arranged on the buoy and can be swiveled 360 ° "whereby the ship is connected to the buoy via two fixed anchorages with a connection" and this is only connected to the buoy _r characterized by the fact that the two mooring lines (9, 10) are pre-tied with a thorn connecting rope - (5) "in the connecting element (8) that old a rotating ring (24) and two! on it is pivotable ango ordon öcen (25,26) vercohon »and since the two postmachine inen (9,10) lie on weekdays behind the bow at the points (15 * 14) and that also the connection stiüok: (8) oils dota by comparison much shorter connecting rope (J) to the buoy (2), if additionally held by a warplelno (17), which prevents a subscription under the ship, even if the post line (9,10) is sagging · ÖAD OBISfNAt i »L