WO2014168572A1 - A mooring system - Google Patents
A mooring system Download PDFInfo
- Publication number
- WO2014168572A1 WO2014168572A1 PCT/SE2014/050446 SE2014050446W WO2014168572A1 WO 2014168572 A1 WO2014168572 A1 WO 2014168572A1 SE 2014050446 W SE2014050446 W SE 2014050446W WO 2014168572 A1 WO2014168572 A1 WO 2014168572A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mooring system
- hawser
- fairlead
- chafing
- attached
- Prior art date
Links
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
-
- 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
- B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like
-
- 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
- B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like
- B63B21/06—Bollards
-
- 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
- B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like
- B63B21/10—Fairleads
-
- 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
- B63B21/16—Tying-up; Shifting, towing, or pushing equipment; Anchoring using winches
-
- 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
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
-
- 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
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
- B63B2021/203—Mooring cables or ropes, hawsers, or the like; Adaptations thereof
Definitions
- the present invention relates to a mooring system for mooring a floating object to another object, the mooring system comprising a hawser and the hawser comprising two rope segments.
- Hawser is a nautical term for a thick cable or rope used in mooring or towing. Mooring refers to any means of attaching a vessel to an object such as a bollard, pier, quay, other floating object/vessel or a mooring.
- a hawser that is long enough to provide sufficient elastic to allow the vessel to move due to movements in waves. If a boat is tied with a short and/or stiff hawser while offshore mooring, it cannot move when in large waves and could be swamped or it could result in excessive loads in the mooring hawsers. A more elastic hawser will allow movement both up and down as well as significant side movement to avoid to become swamped or to avoid excessive loads in the mooring hawser.
- the object of the present invention is to provide an improved mooring system. This object is achieved by the mooring system as set forth in the appended claims.
- the present invention discloses a mooring system comprising a hawser and a first and a second object, wherein at least said first object is adapted to be floating.
- the hawser of the mooring system is provided a first end attached to said first object, and a second end attached to said second object, such that the hawser thereby moors the two objects to each other.
- the hawser comprises at least two rope segments with an intermediate chafing member arranged between the at least two rope segments, wherein the intermediate chafing member runs via a fairlead and said fairlead is arranged adjacent a side of said first object, which side facing the second object and said first end being attached to an attachment point on said first object, which attachment point is arranged distanced to said fairlead.
- the attachment point of the first object is provided at a distance to said fair lead at least corresponding to a length of said chafing member.
- ends of the hawser is meant where the hawser is attached to the first and the second object.
- the actual rope segment can be extending beyond an attachment point to the objects. An extension of the rope segments beyond the attachment point does however not have any technical benefits in relation to the objects of the present invention.
- the rope segments is adapted to have an inner elasticity in relation to said chafing member, whereby the relation between the rope segments elasticity and the chafing members elasticity is such that the chafing member can be considered to be stiff and the rope segments to be elastic.
- the chafing member is adapted to have a high friction durability in relation to said rope segments, whereby the relation between the chafing member's friction durability and the rope segments durability is such, that said chafing member can withstand friction loads without any substantial damages, which friction loads would wear down said rope segments.
- a relation between the length of the intermediate chafing member and the distance between the intermediate chafing member and the attachment point is such, that it allows a stretching of the rope segment compensating for normal motions of the first object and still maintaining the intermediate chafing member within the fairlead.
- the distance between the fairlead and said attachment point is such, that at least the length of the rope segment between the intermediate chafing member and the attachment point, at least corresponds to the length of the intermediate chafing member. Further, the distance between the intermediate chafing member and the attachment point is such, that it allows a stretching of the rope segment compensating for the stiffness of the chafing member, such that the elasticity of the inventive hawser at least corresponds to single rope hawser with the length corresponding of the first rope segment and the intermediate chafing member of the present invention.
- the construction of the inventive hawser with an intermediate chafing member allows the second rope segment to be longer, due to that it can be attached further away from the side of the first object facing the second object, whereby a greater elasticity in the hawser can be achieved than in previously known hawsers, due to the increased total length of rope segments.
- the fairlead creates a joint in which side forces upon the hawser is absorbed when the first and the second objects career relative each other.
- the fairlead thereby enables that the rope segments on each side can be subjected to lengthwise directed forces only and further that the first end can be attached at a point of the first object located distanced from the side facing the second object.
- distanced is meant; the distance along the second rope segment from the intermediate chafing member to the attachment point, whereby the rope segment might pass guiding points, changing the direction of the rope segment, on its way to the attachment point.
- the hawser can thereby become an increased length that in most cases is close to twice the length compared to prior art solutions.
- the rope segments having some elasticity will thus totally give a more elastic mooring in this system.
- a rope is generally more elastic than a cable or chain and the hawser will thus have added elasticity with two rope segments.
- the invention combines the advantages with mooring with a rope, which provides elasticity with the advantages with mooring with a more durable hawser member such as a chain or wire.
- distance of said attachment point of said first object to said fairlead at least corresponds to half a distance between said fairlead and said second end or at least corresponding to the distance between said fairlead and said second end.
- the fairlead and the attachment point of said first object is arranged such relative each other that said chafing member leaves said fairlead with an angle between 0 and 90 degrees from said fairleads main opening direction, or preferably with an angle between 0 and 45 degrees from said fairleads main opening direction, or even more preferably with an angle between 0 and 25 degrees from said fairleads (6) main opening direction.
- the second object can be provided with a fairlead in corresponding manner, whereby the hawser is provided with another intermediate chafing member adapted to run via said fairlead upon the second object and having a third rope segment attached thereto in order to attach to the second object.
- the elasticity of the hawser can thereby be increased even more due to the added length of stretchable rope.
- the chafing member of the hawser is a chafing chain.
- the part of the hawser in contact with the fairlead will apart from the pulling force have a friction load and it will thus be advantageous to have a chain instead of a rope and thereby increasing the lifetime of the hawser.
- the chafing member of the hawser is a chafing cable which will also extend the lifetime as compared to a rope.
- the rope is made from nylon or polyester. Nylon and polyester presents increased elasticity as well as being lighter than a wire or chain.
- the fair lead is a hawser pipe arranged such that the hawser runs through the pipe.
- a pipe do not require that much maintenance as for instance with a pulley and a hawser pipe can also be made quite light.
- the system comprises two hawsers. This allows for better control of the lateral balance of the object with the main part of the hawser system. If further strength is desired the mooring system could be made using two pairs of hawsers. Further hawsers could of course be added if the required strength is very high.
- a parallel arrangement of a plurality of inventive hawsers increases the strength of the mooring system.
- a plurality of inventive hawsers are arranged parallel with each other between the first and second object, especially is a pair of hawsers arranged parallel or a two pairs of hawsers.
- the mooring system comprises a bridle holding the fairlead and that is fastened to the object by using pad eyes or other means of fastening.
- Pad eyes can be produced using different methods.
- the floating object is a semi-submersible platform.
- the bridle holds the fair lead underneath the deck-structure and is at least fastened to columns of the semi-submersible platform located on the side closest to the other object.
- the floating object is a ship-shaped structure, such as a ship or a barge. In this case the mooring system is preferably arranged on the sides of ship.
- the bow or stern of the floating object is positioned towards the other object, the fairlead is arranged adjacent the end of the ship-shaped structure facing the other object and wherein the hawser run along the side of the ship-shaped structure and having one end attached to the farther half of the ship-shaped structure.
- the hawser runs within a pipe along the side of the ship-shaped structure. More preferably is of course to have hawsers on both sides of the ship-shaped structure and thus pipes on both sides.
- the other object is according to one aspect of the present invention also a floating object.
- the other object is a tension leg platform.
- the surface of the hawser pipe has a coating for either decreasing the friction or protection against corrosion or both of these. This could for instance be applied using hot spraying the hawser pipe with thermal spraying and zinc/aluminium powder or cold and hot spraying of polymeric solutions.
- Figure 1 is a schematic bottom view of a mooring system used in an embodiment with the floating object being a platform.
- Figure 2 is a schematic side view of a mooring system according to the invention.
- FIG. 1 shows an inventive mooring system 1 for mooring a floating object 2 to another object 3.
- the mooring system comprises the first and the second object 2, 3 and four hawsers 4 which are attached to a first and the second object 2, 3 with their first and second end 13, 14 respectively.
- the floating object 2 is a platform equipped with the fairleads in the form hawser pipes 6.
- the hawsers 4 run through of hawser pipes 6, thereby creating a joint about which the hawser can bend when the first and the second object 2, 3 moves relative each other.
- the hawser 4 comprises two rope segments 10, 10' which are made of an elastic material such as a nylon or polyester rope.
- the two rope segments 10, 10' are separated by a chafing chain 9.
- the chafing chain 9 is more durable concerning the friction against the hawser pipe 6 than the rope segments 10, 10'.
- the hawser 4 has its second end 14 attached to the second object 3 and the first end 13 is attached to the first object 2 adjacent the side 8 facing away from the second object 3.
- the hawser 4 of the present invention is longer by as much as the first object allows, i.e. decided by the length of the object 2.
- FIG 1 What also is shown in figure 1 is that there are two pairs of parallel hawsers 4 for increased strength of the mooring system.
- the hawser pipes 6 are held together laterally with bridles 1 1 and fixed at both sides using pad eyes 12.
- FIG 2 can be seen a side view of the mooring system 1 .
- the foregoing is a disclosure of an example practicing the present invention. However, it is apparent that modifications and variations of the mooring system will be obvious to one skilled in the art. Inasmuch as the foregoing disclosure is intended to enable one skilled in the art to practice the instant invention, it should not be construed to be limited thereby, but should be construed to include such modifications and variations as fall within the scope of the claims.
- the positioning of the mooring system in the shown embodiment is underneath the box bottom of a platform.
- the hawsers will be placed on the sides of the ship or possibly on deck.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Ropes Or Cables (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112015025395A BR112015025395A2 (en) | 2013-04-12 | 2014-04-11 | anchor system |
CN201480021061.4A CN105377687B (en) | 2013-04-12 | 2014-04-11 | Anchoring system |
SG11201507956XA SG11201507956XA (en) | 2013-04-12 | 2014-04-11 | A mooring system |
US14/783,987 US20160059936A1 (en) | 2013-04-12 | 2014-04-11 | Anchoring system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1350466-7 | 2013-04-12 | ||
SE1350466A SE538099C2 (en) | 2013-04-12 | 2013-04-12 | A mooring system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014168572A1 true WO2014168572A1 (en) | 2014-10-16 |
Family
ID=51690151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2014/050446 WO2014168572A1 (en) | 2013-04-12 | 2014-04-11 | A mooring system |
Country Status (6)
Country | Link |
---|---|
US (1) | US20160059936A1 (en) |
CN (1) | CN105377687B (en) |
BR (1) | BR112015025395A2 (en) |
SE (1) | SE538099C2 (en) |
SG (1) | SG11201507956XA (en) |
WO (1) | WO2014168572A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109823478A (en) * | 2018-12-29 | 2019-05-31 | 南通中远船务工程有限公司 | A kind of marine support platform berthing connection system |
CN114435537B (en) * | 2022-01-25 | 2023-10-24 | 中国一冶集团有限公司 | Ship positioning device for stone throwing operation |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2371371A1 (en) * | 1976-11-22 | 1978-06-16 | Emh | Flexible hawse-pipe sleeve reducing wear on ship mooring lines - is split sleeve pref. of polyolefin, polyurethane or PTFE |
GB2139977A (en) * | 1983-04-13 | 1984-11-21 | Copson George Collingwood | Semi-submersible marine platform |
WO2002087959A2 (en) * | 2001-05-01 | 2002-11-07 | Drillmar, Inc. | Multipurpose unit with multipurpose tower and method for tendering with a semisubmersible |
US20020162496A1 (en) * | 2001-05-01 | 2002-11-07 | Beato Christopher Louis | Tender with hawser lines |
US20070119359A1 (en) * | 2005-11-30 | 2007-05-31 | Technip France | Lashing of tender assist drilling unit to a floating production facility |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4164378A (en) * | 1977-09-02 | 1979-08-14 | Samson Ocean Systems, Inc. | Rope fitting |
BR9000135A (en) * | 1990-01-15 | 1991-10-08 | Petroleo Brasileiro Sa | ANCHOR LAUNCHING SYSTEM AND PLATFORM MOORING AND ANCHOR LAUNCHING UNIT |
GB2304319B (en) * | 1995-08-15 | 1997-10-22 | Gec Alsthom Ltd | Method and apparatus for paying out, securing and hauling in a flexible elongate tensile member |
EP2154059B1 (en) * | 2008-08-08 | 2011-05-18 | Bluewater Energy Services B.V. | Mooring chain connector assembly for a floating device |
ES2691274T3 (en) * | 2009-11-08 | 2018-11-26 | Jurong Shipyard Pte. Ltd. | Offshore floating structure for drilling, production, storage and unloading |
US9180935B2 (en) * | 2012-02-28 | 2015-11-10 | Seahorse Equipment Corp | Method and apparatus for hawser connection in a TLP—TAD system |
-
2013
- 2013-04-12 SE SE1350466A patent/SE538099C2/en not_active IP Right Cessation
-
2014
- 2014-04-11 US US14/783,987 patent/US20160059936A1/en not_active Abandoned
- 2014-04-11 BR BR112015025395A patent/BR112015025395A2/en not_active Application Discontinuation
- 2014-04-11 SG SG11201507956XA patent/SG11201507956XA/en unknown
- 2014-04-11 CN CN201480021061.4A patent/CN105377687B/en active Active
- 2014-04-11 WO PCT/SE2014/050446 patent/WO2014168572A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2371371A1 (en) * | 1976-11-22 | 1978-06-16 | Emh | Flexible hawse-pipe sleeve reducing wear on ship mooring lines - is split sleeve pref. of polyolefin, polyurethane or PTFE |
GB2139977A (en) * | 1983-04-13 | 1984-11-21 | Copson George Collingwood | Semi-submersible marine platform |
WO2002087959A2 (en) * | 2001-05-01 | 2002-11-07 | Drillmar, Inc. | Multipurpose unit with multipurpose tower and method for tendering with a semisubmersible |
US20020162496A1 (en) * | 2001-05-01 | 2002-11-07 | Beato Christopher Louis | Tender with hawser lines |
US20070119359A1 (en) * | 2005-11-30 | 2007-05-31 | Technip France | Lashing of tender assist drilling unit to a floating production facility |
Also Published As
Publication number | Publication date |
---|---|
CN105377687B (en) | 2017-07-07 |
US20160059936A1 (en) | 2016-03-03 |
SG11201507956XA (en) | 2015-10-29 |
SE1350466A1 (en) | 2014-10-13 |
SE538099C2 (en) | 2016-03-01 |
BR112015025395A2 (en) | 2017-07-18 |
CN105377687A (en) | 2016-03-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10633790B2 (en) | Mooring member | |
EP2983977B1 (en) | Water anchors | |
JP2021514892A (en) | Variable density and diameter cables for cables used in cable propulsion vessels and / or submarine cable control by the use of external forces | |
CN101351379B (en) | Lashing of a tender assist drilling unit to a floating production facility | |
US20160059936A1 (en) | Anchoring system | |
EP0878388A1 (en) | Semi-weathervaning anchoring system | |
US11377174B2 (en) | Mooring system | |
US6938571B1 (en) | Floating structure having anchor lines comprising damping means | |
WO2018178002A1 (en) | A method and an arrangement for removing stretch in polyester mooring lines with an inline tensioner | |
CN103603319B (en) | A kind of constant-resistance anti-collision anchor chain | |
EP2712800B1 (en) | A floating object provided with a permanent mooring system and a mooring line | |
CN210086170U (en) | Novel auxiliary assembly is laid to oil gas pier lead cable | |
EP3625118B1 (en) | Buoy comprising light weight armature for weight transfer | |
RU2707479C2 (en) | Dynamic loads compensation device in tow line | |
EP0878389B1 (en) | Semi-weathervaning anchoring system | |
Kery | Dynamic modeling of ship-to-ship and ship-to-pier mooring performance | |
RU205321U1 (en) | DEVICE FOR TOWING ICE FORMATIONS | |
US20060060122A1 (en) | Mooring rope protector which is intended, in particular, for a pleasure boat | |
KR20240090238A (en) | Mooring lines for floating platforms | |
WO1998057844A1 (en) | Arrangements in buoys, particularly buoys for cable anchor chains | |
US20080178788A1 (en) | Tension and compression spring device linear motion control device | |
Flory et al. | Mooring System Integrity in Exposed Locations and Narrow Channels | |
CN110803254A (en) | Ore mixed conveying hose system for positioning and shaping spiral auxiliary cable | |
JPH04131134U (en) | moored floating body | |
NZ336516A (en) | Mooring apparatus comprising a number of weights secured to a cable encased within a flexible tube |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14782138 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14783987 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112015025395 Country of ref document: BR |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14782138 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 112015025395 Country of ref document: BR Kind code of ref document: A2 Effective date: 20151005 |