WO2012163394A1 - Mooring assembly for a vessel - Google Patents
Mooring assembly for a vessel Download PDFInfo
- Publication number
- WO2012163394A1 WO2012163394A1 PCT/EP2011/058811 EP2011058811W WO2012163394A1 WO 2012163394 A1 WO2012163394 A1 WO 2012163394A1 EP 2011058811 W EP2011058811 W EP 2011058811W WO 2012163394 A1 WO2012163394 A1 WO 2012163394A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- turret
- bearing
- mooring
- torsion
- attached
- Prior art date
Links
- 238000005452 bending Methods 0.000 claims abstract description 7
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 108010014172 Factor V Proteins 0.000 description 1
- POSKOXIJDWDKPH-UHFFFAOYSA-N Kelevan Chemical compound ClC1(Cl)C2(Cl)C3(Cl)C4(Cl)C(CC(=O)CCC(=O)OCC)(O)C5(Cl)C3(Cl)C1(Cl)C5(Cl)C42Cl POSKOXIJDWDKPH-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/507—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers with mooring turrets
Definitions
- the invention relates to a mooring assembly for a vessel, comprising a moonpooi defined in the vessel, a tur ⁇ ret rotatably mounted within the moonpooi by means of an up ⁇ per main bearing for transmitting horizontal and vertical ioads between the vessel and turret and by means of a lower secondary bearing for substantially transmitting horizontal ioads between the vessel and the turret, and mooring lines attached to the lower region of the turret .
- the lower secondary bearing transmits the major part of the mooring forces (which are caused by the mooring lines) in a horizontal direction to the vessel, Practically,, however, it is difficult to avoid that a substantial part of these forces are reacted by the upper main bearing, causing severe stresses, particularly in the turret and in the upper main bearing.
- One suggested solution for this problem is to decrease the diameter of at least a lower part of the turret such as to reduce its resistance against bending. As a re ⁇ sult the turret may bend under horizontal mooring forces, causing the lower secondary bearing to transmit most of the horizontal loads.
- a disadvantage is that such a reduction of diameter of the turret reduces the available space for risers (or other elements such as, for example, a disconnectable buoy member) . Further such a. reduction of di- ameter may decrease the ability of the turret to transmit circuxnferentiai loads .
- Document EP-A-0 656 293 illustrates in figures 13- 15 embodiments of a mooring system with a turret provided with lower pivotal or flexible arms having free ends to which mooring lines are connected and which carry bearing pads that can move into contact with a vessel bearing ring.
- the shown embodiments of said system however have a complicated structure and require a careful design to provide suf- ficient ability to transmit loads in a c rcumferential di ⁇ rection .
- the mooring assembly is characterized in that the turret at its lower region comprises a number of circumferent.ial.Iy spaced torsion box like torsion members each extending substan ⁇ tially vertically between an upper end attached to the tur ⁇ ret and a lower free end, which torsion members have a re ⁇ sistance against bending that in a circumferential direction is greater than in a radial direction, wherein the mooring lines are attached to said torsion members near said lower free ends and wherein the lower secondary bearing is defined by outwardly facing bearing members attached to said torsion, members and an inwardly facing bearing ring attached to the moonpool, and wherein in a situation in which a torsion member is not loaded, horizontally by a respective mooring line its bearing member does not engage the bearing ring.
- the torsion members offers a simple design, how ⁇ ever combined with the provision of a flexibility which, at one hand allows the torsion, members to bend outwardly into contact with the bearing ring (avoiding the transmission of horizontal loads to the upper main bearing) and at the other hand offers sufficient rigidity in the circumferential di ⁇ rection to transmit circumferential loads to the turret (and to whatever constructional and/or operational parts sup ⁇ ported thereby) . Because, further, this design does not require a reduction of the diameter of any part of the turret, the available space for risers is optimised.
- the torsion box design results in a torsion stiffness which ensures full contact between the bearing members and effectively avoids undesired phenomena, such as fretting between the bearing members and the bearing ring due to dynamic stick-slip ef- fects. As a result the bearing members and bearing ring are maintained in full engagement .
- the gap present between a bearing member and the bearing ring in a situation in which a torsion member is not loaded horizontally by a respective mooring line moreover allows hogging ' and sagging of the vessel with a resulting change of the gap dimension without effecting the horizontal load distribution over the upper main bearing and the lower secondary bearing.
- the torsion members taper in a vertical direction, for example upwardly.
- a taper al ⁇ lows the mooring assembly, and specifically the turret, to be optimised, both in a constructional and spatial sense.
- the ratio between the resistance of the torsion members against bending in a circumferential direction and in a radial direction is at least five.
- the bearing members are frict ion pad.s .
- the lower secondary bearing is located at the lower free ends of the torsion members wherein the position where the mooring lines are attached to the turret substantially is located at the same level.
- the mooring lines engage the torsion members near to the lower secondary bearing, such that mooring loads are almost directly directed to the lower secondary bearing without loading the turret in an excessive manner.
- the lower secondary bearing is located above the lower free ends of the torsion members at a higher level than the position where the mooring lines are attached to the turret.
- the torsion members must be sufficiently flexible to be moved radially outward when loaded, but also sufficiently rigid to prevent an engagement between the lowermost part of a torsion member (below said secondary bearing) and the rrioonpooi .
- torsion members have different cross sections, for example when one expects the mooring assembly to be loaded in an asymmetrical manner (caused, for example, by a predominant direction of a sea current or wind) .
- the turret comprises a lower turret section and an upper turret section and wherein the lower turret section is detachable from the upper turret section.
- the lower turret section may be part of or may define a detachable buoy member which may support the risers.
- Figure 1 scheinatica11y shows an embodiment of a mooring assembly according to the present invention in a side elevat ional view
- Figure 2 schematically shows a partial cross section according to ⁇ - ⁇ in figure 1.
- a mooring assembly for a vessel 1 is illustrated schematically. It comprises a moonpool 2 defined in the vessel, a turret 3 rotatably mounted within the moonpool by means of an upper main bearing 4 for transmitting horizontal and vertical loads between the vessel and turret and by means of a lower secondary bearing 5 for substantially transmitting horizontal loads between the vessel and the turret .
- the tor- ret 3 at its lower region comprises a number of circumferen- tially spaced torsion box like torsion members 7 each extending substantially vertically between an upper end attached to the turret 3 and a lower free end.
- These torsion members are designed in. such a manner that they have a resistance ag inst bending that in a circumferential direction is greater than in a radial direction. These resistances may differ at least a factor five.
- Mooring lines 6 are attached to said torsion members 7 near said lower free ends of the torsion members 7.
- the lower secondary bearing 5 is defined by outwardly facing bearing members 8 attached to said lower free ends of the torsion members 7 and an inwardly facing bearing ring 9 attached to the wall of the moonpool 2,
- the bearing members 8 are friction pads.
- a torsion member 7 is not loaded horizontally by a respective mooring line 6 (as illustrated in figures 1 and 2 ⁇ its bearing member 8 does not engage the bearing ring 9, Under a sufficiently large horizontal ⁇ outward; load, however, such a flexible torsion member 7 will bend outwardly and its bearing member 8 will engage the bearing ring 9, thus activating the lower secondary bearing 5 and keeping the resulting load on the upper main bearing 4 as small as possible.
- Tors on of the to sion members 7 is avoided because of the torsion box design. This maintains a full engagement between the bearing members 8 and bearing ring 9,
- the length of the spacing 10 may differ from what has been illustrated. Moreover some spacings may have different lengths and/or widths.
- the torsion members 7, which define torsion boxes comprising among others (in a known manner and thus not further elucidated here) opposite wall sections and internal stiffening members, may taper vertically, for example upTM wardly. Further their cross section may differ between different torsion members 7.
- the turret 3 may comprise a lower turret section and an upper turret section wherein the lower turret section is detachable from the upper turret section.
- a lower turret section may be part of or may define a detachable buoy member supporting risers 11 in a manner known per se.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Springs (AREA)
- Earth Drilling (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2013153504/11A RU2547327C1 (en) | 2011-05-30 | 2011-05-30 | Ship mooring device |
CN201180071347.XA CN103889837B (en) | 2011-05-30 | 2011-05-30 | Mooring assembly for a vessel |
AU2011369881A AU2011369881B2 (en) | 2011-05-30 | Mooring assembly for a vessel | |
BR112013030642-4A BR112013030642B1 (en) | 2011-05-30 | 2011-05-30 | mooring set for a vessel |
DK11722427.9T DK2714504T3 (en) | 2011-05-30 | 2011-05-30 | Mooring system for a vessel |
CA2837490A CA2837490C (en) | 2011-05-30 | 2011-05-30 | Mooring assembly for a vessel |
US14/122,477 US9108702B2 (en) | 2011-05-30 | 2011-05-30 | Mooring assembly for a vessel |
EP11722427.9A EP2714504B1 (en) | 2011-05-30 | 2011-05-30 | Mooring assembly for a vessel |
PCT/EP2011/058811 WO2012163394A1 (en) | 2011-05-30 | 2011-05-30 | Mooring assembly for a vessel |
MX2013014074A MX338133B (en) | 2011-05-30 | 2011-05-30 | Mooring assembly for a vessel. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2011/058811 WO2012163394A1 (en) | 2011-05-30 | 2011-05-30 | Mooring assembly for a vessel |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012163394A1 true WO2012163394A1 (en) | 2012-12-06 |
Family
ID=44119325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/058811 WO2012163394A1 (en) | 2011-05-30 | 2011-05-30 | Mooring assembly for a vessel |
Country Status (9)
Country | Link |
---|---|
US (1) | US9108702B2 (en) |
EP (1) | EP2714504B1 (en) |
CN (1) | CN103889837B (en) |
BR (1) | BR112013030642B1 (en) |
CA (1) | CA2837490C (en) |
DK (1) | DK2714504T3 (en) |
MX (1) | MX338133B (en) |
RU (1) | RU2547327C1 (en) |
WO (1) | WO2012163394A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016019980A1 (en) * | 2014-08-05 | 2016-02-11 | Bluewater Energy Services B.V. | Lower bearing for mooring assembly for a vessel |
WO2017202452A1 (en) * | 2016-05-24 | 2017-11-30 | Bluewater Energy Services B.V. | Turret assembly |
EP3835194A1 (en) * | 2019-12-13 | 2021-06-16 | Bluewater Energy Services B.V. | Assembly of a vessel and a turret |
RU2757696C1 (en) * | 2020-11-02 | 2021-10-20 | Александр Владимирович Жуков | Method for mooring a vessel and automated mooring apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK3571117T3 (en) * | 2017-01-19 | 2021-04-12 | Single Buoy Moorings | CHAIN PLATE FOR A TURNING TOWER ON A VESSEL |
CN111824331A (en) * | 2019-04-22 | 2020-10-27 | 广州船舶及海洋工程设计研究院(中国船舶工业集团公司第六0五研究院) | Single point mooring system, mooring platform and mooring bearing of ship |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4305341A (en) * | 1979-10-09 | 1981-12-15 | Chicago Bridge & Iron Company | Spindle moored ship |
WO1987006555A1 (en) * | 1986-04-29 | 1987-11-05 | Key Ocean Services, Inc. | Vessel mooring system and method for its installation |
EP0259072A1 (en) * | 1986-08-27 | 1988-03-09 | Taylor Woodrow Construction Limited | Mooring system and system of mooring a floating structure |
WO1989003338A1 (en) * | 1987-10-12 | 1989-04-20 | A/S Pusnes Marine And Offshore Services | Turret device |
US4955310A (en) * | 1988-12-08 | 1990-09-11 | Jack Pollack | Bearing arrangement for single point terminal |
US5178087A (en) * | 1991-01-16 | 1993-01-12 | Single Buoy Moorings, Inc. | Mooring device |
US5381750A (en) * | 1993-12-02 | 1995-01-17 | Imodco, Inc. | Vessel turret mooring system |
US20020073906A1 (en) * | 2000-10-18 | 2002-06-20 | Fmc Technologies, Inc. | Turret mooring system and method for installation |
US20040261683A1 (en) * | 2003-04-23 | 2004-12-30 | Fmc Technologies, Inc. | Upper bearing support assembly for internal turret |
US20050061224A1 (en) * | 2003-07-30 | 2005-03-24 | Fmc Technologies, Inc. | Turret mooring system for concrete hull vessel |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5893784A (en) * | 1996-06-17 | 1999-04-13 | Fmc Corporation | Bearing support structure for a turret in mooring system and method for its installation |
BR0307987A (en) * | 2002-02-19 | 2004-12-07 | Fmc Technologies | Vessel |
-
2011
- 2011-05-30 WO PCT/EP2011/058811 patent/WO2012163394A1/en active Application Filing
- 2011-05-30 DK DK11722427.9T patent/DK2714504T3/en active
- 2011-05-30 BR BR112013030642-4A patent/BR112013030642B1/en active IP Right Grant
- 2011-05-30 RU RU2013153504/11A patent/RU2547327C1/en active
- 2011-05-30 CA CA2837490A patent/CA2837490C/en active Active
- 2011-05-30 US US14/122,477 patent/US9108702B2/en active Active
- 2011-05-30 MX MX2013014074A patent/MX338133B/en active IP Right Grant
- 2011-05-30 CN CN201180071347.XA patent/CN103889837B/en active Active
- 2011-05-30 EP EP11722427.9A patent/EP2714504B1/en active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4305341A (en) * | 1979-10-09 | 1981-12-15 | Chicago Bridge & Iron Company | Spindle moored ship |
WO1987006555A1 (en) * | 1986-04-29 | 1987-11-05 | Key Ocean Services, Inc. | Vessel mooring system and method for its installation |
EP0259072A1 (en) * | 1986-08-27 | 1988-03-09 | Taylor Woodrow Construction Limited | Mooring system and system of mooring a floating structure |
WO1989003338A1 (en) * | 1987-10-12 | 1989-04-20 | A/S Pusnes Marine And Offshore Services | Turret device |
US4955310A (en) * | 1988-12-08 | 1990-09-11 | Jack Pollack | Bearing arrangement for single point terminal |
US5178087A (en) * | 1991-01-16 | 1993-01-12 | Single Buoy Moorings, Inc. | Mooring device |
US5381750A (en) * | 1993-12-02 | 1995-01-17 | Imodco, Inc. | Vessel turret mooring system |
EP0656293A1 (en) | 1993-12-02 | 1995-06-07 | Imodco, Inc. | Vessel turret mooring system |
US20020073906A1 (en) * | 2000-10-18 | 2002-06-20 | Fmc Technologies, Inc. | Turret mooring system and method for installation |
US20040261683A1 (en) * | 2003-04-23 | 2004-12-30 | Fmc Technologies, Inc. | Upper bearing support assembly for internal turret |
US20050061224A1 (en) * | 2003-07-30 | 2005-03-24 | Fmc Technologies, Inc. | Turret mooring system for concrete hull vessel |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2543009B (en) * | 2014-08-05 | 2020-08-19 | Bluewater Energy Services Bv | Lower bearing for mooring assembly for a vessel |
US10227111B2 (en) | 2014-08-05 | 2019-03-12 | Bluewater Energy Services B.V. | Lower bearing for mooring assembly for a vessel |
CN107074325A (en) * | 2014-08-05 | 2017-08-18 | 蓝水能源服务有限公司 | Lower bearing for the mooring component of ship |
WO2016019980A1 (en) * | 2014-08-05 | 2016-02-11 | Bluewater Energy Services B.V. | Lower bearing for mooring assembly for a vessel |
RU2649279C1 (en) * | 2014-08-05 | 2018-03-30 | Блюуотер Энерджи Сёвисиз Б.В. | Bottom support of the mooring systems of the vessel |
GB2543009A (en) * | 2014-08-05 | 2017-04-05 | Bluewater Energy Services Bv | Lower bearing for mooring assembly for a vessel |
CN109153430A (en) * | 2016-05-24 | 2019-01-04 | 蓝水能源服务有限公司 | Turret assembly |
RU2708836C1 (en) * | 2016-05-24 | 2019-12-11 | Блюуотер Энерджи Сервисез Б.В. | Turret system |
WO2017202452A1 (en) * | 2016-05-24 | 2017-11-30 | Bluewater Energy Services B.V. | Turret assembly |
US10696359B2 (en) | 2016-05-24 | 2020-06-30 | Bluewater Energy Services B.V. | Turret assembly |
AU2016407842B2 (en) * | 2016-05-24 | 2022-01-13 | Bluewater Energy Services B.V. | Turret assembly |
EP3835194A1 (en) * | 2019-12-13 | 2021-06-16 | Bluewater Energy Services B.V. | Assembly of a vessel and a turret |
US11655010B2 (en) | 2019-12-13 | 2023-05-23 | Bluewater Energy Services B.V. | Assembly of a vessel and a turret |
RU2757696C1 (en) * | 2020-11-02 | 2021-10-20 | Александр Владимирович Жуков | Method for mooring a vessel and automated mooring apparatus |
Also Published As
Publication number | Publication date |
---|---|
AU2011369881A1 (en) | 2013-12-12 |
EP2714504B1 (en) | 2018-09-05 |
BR112013030642B1 (en) | 2021-01-12 |
CA2837490A1 (en) | 2012-12-06 |
US9108702B2 (en) | 2015-08-18 |
CA2837490C (en) | 2017-09-12 |
CN103889837B (en) | 2017-02-22 |
CN103889837A (en) | 2014-06-25 |
EP2714504A1 (en) | 2014-04-09 |
MX2013014074A (en) | 2014-03-21 |
MX338133B (en) | 2016-04-01 |
RU2547327C1 (en) | 2015-04-10 |
BR112013030642A2 (en) | 2016-11-29 |
US20140216322A1 (en) | 2014-08-07 |
DK2714504T3 (en) | 2018-12-10 |
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