US3380091A - Single point mooring arrangement for tank ships - Google Patents

Single point mooring arrangement for tank ships Download PDF

Info

Publication number
US3380091A
US3380091A US519477A US51947766A US3380091A US 3380091 A US3380091 A US 3380091A US 519477 A US519477 A US 519477A US 51947766 A US51947766 A US 51947766A US 3380091 A US3380091 A US 3380091A
Authority
US
United States
Prior art keywords
buoy
jetty
single point
pipeline
pivot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US519477A
Other languages
English (en)
Inventor
Saurin Brendan Francis
James N Mcfeeters
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BP PLC
Original Assignee
BP PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BP PLC filed Critical BP PLC
Application granted granted Critical
Publication of US3380091A publication Critical patent/US3380091A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00—Buoys
    • B63B22/02—Buoys specially adapted for mooring a vessel
    • B63B22/021—Buoys specially adapted for mooring a vessel and for transferring fluids, e.g. liquids
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
    • E02B3/24—Mooring posts

Definitions

  • a buoy is moored to the sea bed and in which a floating jetty is provided and includes means for attaching the mooring ropes of a ship, and means for attaching the jetty to the buoy.
  • the means for attaching the jetty to the buoy are such that the jetty may both move around the buoy in a horizontal plane and may also move in a vertical plane so as to accommodate the relative motion of the buoy and the jetty caused by tide and wave action.
  • This invention relates to single point mooring arrangements for ships, especially tank ships.
  • the buoy comprises a mooring swivel to which mooring lines may be attached whereby the rotation is facilitated.
  • buoy pipeline terminal which is incorporated in the buoy and to which the cargo manifolds of a vessel may be coupled during cargo transference.
  • the buoy pipeline terminal In order to allow free rotation of the vessel around the single point mooring buoy it is conventional for the buoy pipeline terminal to include a sealed rotary take-off which is often linked with the mooring swivel.
  • flexible hoses are permanently coupled to the buoy pipeline terminal and these are picked up by a moored vessel and coupled to the cargo manifolds.
  • a single point mooring arrangement for ships comprising a buoy moored to the sea bed, a floating jetty which includes means for attaching the mooring ropes of a ship and means for attaching the jetty to the buoy so that the jetty may both move around the buoy in a horizontal plane and may also move in a vertical plane so as to accommodate the relative movement of buoy and jetty caused by tide and/ or wave action.
  • a particularly suitable means for attaching the jetty to the buoy is formed of one or more, preferably two,
  • connecting struts each of which is attached, at one end, to the buoy and, at the other end, to the jetty. Where two connecting struts are employed they are most suitably connected to the same point on the buoy and to separate points on the jetty.
  • each rigid strut is provided with two flexible joints, one at each end, each of which comprises a centre pivot which passes through a hole in a pivot plate, the hole in the pivot plate having a larger diameter than the centre pivot; the pivot plate being clamped between two deformable buffers mounted on the centre pivot whereby the centre pivot is flexibly connected to the pivot plate.
  • the centre pivots, at both ends, may be secured to the rigid connecting strut and the pivot plate at one end to buoy and at the other end to the jetty.
  • a single point mooring incorporates a pipeline system for the transference of liquid cargo it is convenient to provide a pipeline systern which is supported by the jetty; the pipeline system being connected to the buoy pipeline terminal, and providing connection pointsto which the cargo manifolds of a vessel may be coupled during cargo transference.
  • the pipeline on the jetty is connected to the buoy pipeline terminal by means of one or more flexible pipes which may be supported on and protected by the rigid connecting struts.
  • the jetty comprises a rectangular tubular framework formed of two elongated side arms cross-linked by two tubular end struts and a plurality of tubular cross-struts to provide extra rigidity; the buoyancy of the jetty being provided by the natural buoyancy of the tubes of which it is constructed.
  • the pipeline may be carried on top of the side arms.
  • the rectangular tubular framework preferably supports a working platform upon which the connection points of the pipeline are situated.
  • the buoy to which the jetty is connected is preferably a tensioned-buoy; i.e. a buoy which is held down below its natural level of floatation by its mooring ropes.
  • a tensioned-buoy i.e. a buoy which is held down below its natural level of floatation by its mooring ropes.
  • the invention also includes a modification of the single point mooring arrangement described above in which the buoy is replaced by a piled structure built up from the sea bed.
  • FIGURE 1 is a general view of a single point mooring arrangement according to the invention
  • FIGURE 2 is a plan view showing the jetty and its attachment to the buoy
  • FIGURE 3 is a cross sectional view of the jetty across the line IIIIII as shown in FIGURE 2.
  • FIGURE 4 is a cross sectional view of the jetty across the line IV--IV as shown in FIGURE 2,
  • FIGURE 5 is a cross sectional view of the line V-V as shown in FIGURE 2, and
  • FIGURE 6 is a cross sectional view showing detail of a flexible joint incorporated in the linkage between the jetty and the buoy.
  • the mooring illustrated in FIGURE 1 comprises a ground anchor system It) to which a buoy 11 is anchored by meansof anchor cables 12.
  • the buoy is of the tensioned type; that is the anchor cables 12 are of such a length that the buoy is held down below its natural level of flotation. It is emphasized that this requirement applies even at low tide and this implies that the buoy may be totally submerged at high water. For example a buoy jetty across which is moored at a location where the tide rises 15 feet may be -15 feet under water at high tide.
  • a floating jetty 13 is moored to the buoy 11 by means of rigid connecting struts 14 which are connected to the buoy and in particular to a conventional swivel 40 which is part of the buoy and which permits the jetty to revolve 360 around the buoy.
  • a pipeline 42 is laid on the sea bed and up to a buoy pipeline terminal 41 which forms part of the buoy 11.
  • a jetty pipeline system is connected to the buoy pipeline terminal 41.
  • the buoy pipeline terminal includes a sealed rotary take-ofl? which may be connected to the swivel 40 to ensure that the two rotate together.
  • the jetty is formed of a rectangular tubular frame work formed from two side arms 15 which are provided with fenders 16 along their outboard extremities and two end struts 18. Additional rigidity in the framework is provided by cross struts 17. All these members are of tubular construction to provide the buoyancy needed to keep the jetty afloat.
  • Bollards 29 are secured to the framework to provide a means for attaching the mooring ropes of a ship.
  • the jetty is connected to the buoy 11 (and in particular to the swivel which is part of the buoy) by means of connecting struts 14. Since the buoy does not rise and fall with the tide and it is less subject to wave action (particularly when it is under water at high tides) than the jetty the linkage needs to be flexible and both ends of each of the connecting struts 14 are provided with a flexible joint 27. A suitable joint is illustrated in greater detail in FIGURE 5.
  • the jetty In addition to providing mooring for a tank ship the jetty also provides a pipe-line terminal for cargo transference and rigid pipe-lines 23 are carried on top of the side arms 15 and connected to the buoy terminal pipe-line 41 by means of the flexible pipes 26. To reduce wear the centre portions of the flexible pipe-lines may be lashed to the connecting struts 14.
  • the side arms 15 and the end struts 18 also carry a walk-way 21 which is provided with a hand rail 22 and this provides access around the perimeter of the jetty. In the vicinity of a bollard 29 the walk-way 21 is widened out to provide room for the handling of mooring lines.
  • FIGURE 3 is a cross section of the jetty which shows the pipe-line 23 carried on the side arm 15 beneath the walk-way 21 which is provided with hand rail 22. This figure also shows the fender 16 and that the cross strut 17 has a smaller diameter than the side arm 15.
  • FIGURE 4 is a similar cross section to FIGURE 3 but taken in the vicinity of a bollard 29. This figure also illustrates the widening of the walk-way 21 in the vicinity of the bollard.
  • the jetty is provided with an operating platform 26 which carries the hose handling equipment (since a wide variety of hose handling equipment is available no details are shown, the location being indicated by means of rectangles) and because this imposes extra load upon the framework extra bracing is provided by four additional cross struts 19 and a centre longitudinal strut 20.
  • the joint is formed from a centre pivot 31 which passes through a hole 39 in a pivot plate 30.
  • the hole has a greater diameter than that of the centre pivot so that considerable annular movement is permitted.
  • the centre pivot 31 is secured to the connecting strut 14 by welding it to an internal plate 35 and end plate 36.
  • the pivot plate is welded to the member to which the connecting strut 14 is connected (i.e. the jetty at one end and the swivel of the buoy at the other).
  • the pivot plate 30 is clamped between rubber buffers 32 and 33 which are compressed between the end plate 36 and the face plate 34, the compression being applied by the tightening of the nut 38.
  • the rubber buffers hold the flexible joint secure against the tension (and occasional compression) due to movement of the jetty but the flexibility of the rubber permits suflicient angular distortion to accommodate the rise and fall of tide and wave action.
  • a single point mooring arrangement for ships with comprises a buoy moored to the sea bed, a floating jetty which includes means for attaching the mooring ropes of a ship, and means for attaching the jetty to the buoy, the means for attaching the jetty to the buoy being such that the jetty may both move around the buoy in a horizontal plane and may also move in a vertical plane so as to accommodate the relative motion of the buoy and the jetty caused by tide and wave action, said jetty attaching means being formed of at least one rigid connecting strut which is attached at one end to the buoy and at the other to the jetty and said jetty attaching means also comprising two flexible joints associated with each rigid connecting strut, one flexible joint being situated at each end of each strut, each flexible joint comprising a centre pivot and a pivot plate, the pivot plate having a hole of larger diameter than the centre pivot and the centre pivot being passed through said hole, each centre pivot being secured to one of the rigid connecting struts, each pivot plate which is comprise
  • a single point mooring arrangement which comprises a pipeline for the transference of liquid cargo which comprises a jetty pipeline system supported on the jetty and a link pipeline system which connects the jetty pipeline system to the buoy pipeline terminal, the link pipeline system comprising one or more flexible hoses which are supported on and protected by the rigid connecting struts.
  • the jetty comprises a rectangular tubular framework which is formed from two tubular side arms, two tubular end struts and a plurality of tubular crossstruts, the side arms and end struts being connected at their ends so as to form a rectangle and one end of each cross-strut being secured to one side arm at a point intermediate its ends and the other end of the same cross strut being secured to the other side arm at a point intermediate to its ends so as to strengthen the structure, the buoyancy of the jetty being provided by the natural buoyancy of the tubes of which it is constructed.
  • a single point mooring arrangement for ships which comprises: a buoy moored to the sea bed, a floating jetty which includes means for attaching the mooring ropes of a ship, and means for attaching the jetty to the buoy, the means for attaching the jetty to the buoy being such that the jetty may both move around the buoy in a horizontal plane and may also move in a vertical plane so as to accommodate the relative motion of the buoy and the jetty caused by tide and wave action, said jetty attaching means being formed of two rigid connecting struts each of which is attached at one end to the buoy and at the other end to the jetty and said jetty attaching means also comprising four flexible joints, one flexible joint being associated with each end of each of the two rigid connecting struts, each flexible joint comprising a centre pivot plate and a p vot, the pivot plate having a hole of larger diameter than the centre pivot and the centre pivot being passed through said hole, each centre pivot being secured to one of the rigid connecting struts, each pivot plate

Landscapes

  • Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Bridges Or Land Bridges (AREA)
  • Earth Drilling (AREA)
US519477A 1965-01-12 1966-01-10 Single point mooring arrangement for tank ships Expired - Lifetime US3380091A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1338/65A GB1104561A (en) 1965-01-12 1965-01-12 Single point mooring arrangement for tank ships

Publications (1)

Publication Number Publication Date
US3380091A true US3380091A (en) 1968-04-30

Family

ID=9720259

Family Applications (1)

Application Number Title Priority Date Filing Date
US519477A Expired - Lifetime US3380091A (en) 1965-01-12 1966-01-10 Single point mooring arrangement for tank ships

Country Status (6)

Country Link
US (1) US3380091A (h)
BE (1) BE675012A (h)
DE (1) DE1506228A1 (h)
FR (1) FR1463292A (h)
GB (1) GB1104561A (h)
NL (1) NL6600321A (h)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466680A (en) * 1967-07-14 1969-09-16 Air Logistics Corp Apparatus for loading and unloading offshore vessels
US3500484A (en) * 1967-11-10 1970-03-17 Mr Touloukian Device for mooring ships
US3765463A (en) * 1971-03-22 1973-10-16 Gulf Research Development Co Offshore terminal
US3786525A (en) * 1972-06-01 1974-01-22 Us Army Transportable mooring buoy assembly
US3839977A (en) * 1971-09-29 1974-10-08 C Bradberry Floating marine terminal
US3978805A (en) * 1975-04-25 1976-09-07 The Unites States Of America As Represented By The United States Energy Research And Development Administration Stabilized floating platforms
JPS55271B1 (h) * 1970-09-22 1980-01-07
US4406636A (en) * 1978-11-14 1983-09-27 Heijst Willem J Van Single-point mooring systems
US4534740A (en) * 1982-06-09 1985-08-13 Single Buoy Moorings, Inc. System for maintaining a buoyant body in position in relation to another body
US20040094082A1 (en) * 2002-11-12 2004-05-20 Fmc Technologies, Inc. Retrieval and connection system for a disconnectable mooring yoke
US20050204987A1 (en) * 2002-09-18 2005-09-22 Baan Jacob D Mooring apparatus
FR2914272A1 (fr) * 2007-04-02 2008-10-03 Fabrice Duffour Dispositif de corps-mort pour l'amarrage d'un ou deux bateaux.
WO2017215054A1 (zh) * 2016-06-14 2017-12-21 天津市海王星海上工程技术股份有限公司 一种单点靠泊装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3541622A (en) * 1968-04-05 1970-11-24 Eugene H Harlow Floating pier for loading and unloading vessels
US3641602A (en) * 1969-09-09 1972-02-15 Exxon Research Engineering Co Single anchor leg single point mooring system
GB1285406A (en) * 1969-09-09 1972-08-16 Exxon Research Engineering Co Single point mooring and fluid cargo handling system
US3708811A (en) * 1971-01-06 1973-01-09 Exxon Research Engineering Co Single anchor leg single point mooring system
NL165422C (nl) * 1972-06-09 1983-02-16 Single Buoy Moorings Permanent aan een boei afgemeerde drijvende opslaginrichting zoals een tanker.
FR2230542A1 (en) * 1973-05-21 1974-12-20 Erap Elf Entr Rech Activ Petro Loading arm for tankers operating from a buoy - free end of open framework arm is supported by a float
FR2613315A1 (fr) * 1987-04-02 1988-10-07 Frelat Eric Rotation, translation sur la dynamique d'un volume insubmersible arrime

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882536A (en) * 1955-12-29 1959-04-21 Harry B Jordan Buoy construction
US3014710A (en) * 1960-02-08 1961-12-26 Auto Mechanical Dock Board Inc Shock-absorbing bumper
US3155069A (en) * 1962-08-17 1964-11-03 B P Tanker Company Ltd Mooring arrangements for ships
US3177838A (en) * 1963-09-19 1965-04-13 Cornelius Bregoff Marine mooring device
US3209545A (en) * 1961-07-19 1965-10-05 Exxon Research Engineering Co Off-shore triangular ship mooring structure
US3236266A (en) * 1963-02-20 1966-02-22 Fmc Corp Method and apparatus for transferring fluid offshore
US3285213A (en) * 1963-11-08 1966-11-15 Whittle Frank Floating structures

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882536A (en) * 1955-12-29 1959-04-21 Harry B Jordan Buoy construction
US3014710A (en) * 1960-02-08 1961-12-26 Auto Mechanical Dock Board Inc Shock-absorbing bumper
US3209545A (en) * 1961-07-19 1965-10-05 Exxon Research Engineering Co Off-shore triangular ship mooring structure
US3155069A (en) * 1962-08-17 1964-11-03 B P Tanker Company Ltd Mooring arrangements for ships
US3236266A (en) * 1963-02-20 1966-02-22 Fmc Corp Method and apparatus for transferring fluid offshore
US3177838A (en) * 1963-09-19 1965-04-13 Cornelius Bregoff Marine mooring device
US3285213A (en) * 1963-11-08 1966-11-15 Whittle Frank Floating structures

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466680A (en) * 1967-07-14 1969-09-16 Air Logistics Corp Apparatus for loading and unloading offshore vessels
US3500484A (en) * 1967-11-10 1970-03-17 Mr Touloukian Device for mooring ships
JPS55271B1 (h) * 1970-09-22 1980-01-07
US3765463A (en) * 1971-03-22 1973-10-16 Gulf Research Development Co Offshore terminal
US3839977A (en) * 1971-09-29 1974-10-08 C Bradberry Floating marine terminal
US3786525A (en) * 1972-06-01 1974-01-22 Us Army Transportable mooring buoy assembly
US3978805A (en) * 1975-04-25 1976-09-07 The Unites States Of America As Represented By The United States Energy Research And Development Administration Stabilized floating platforms
US4406636A (en) * 1978-11-14 1983-09-27 Heijst Willem J Van Single-point mooring systems
US4534740A (en) * 1982-06-09 1985-08-13 Single Buoy Moorings, Inc. System for maintaining a buoyant body in position in relation to another body
US20050204987A1 (en) * 2002-09-18 2005-09-22 Baan Jacob D Mooring apparatus
US7426897B2 (en) * 2002-09-18 2008-09-23 Bluewater Energy Services Bv Mooring apparatus
US20040094082A1 (en) * 2002-11-12 2004-05-20 Fmc Technologies, Inc. Retrieval and connection system for a disconnectable mooring yoke
US7007623B2 (en) 2002-11-12 2006-03-07 Fmc Technologies, Inc. Retrieval and connection system for a disconnectable mooring yoke
FR2914272A1 (fr) * 2007-04-02 2008-10-03 Fabrice Duffour Dispositif de corps-mort pour l'amarrage d'un ou deux bateaux.
WO2017215054A1 (zh) * 2016-06-14 2017-12-21 天津市海王星海上工程技术股份有限公司 一种单点靠泊装置

Also Published As

Publication number Publication date
DE1506228A1 (de) 1969-04-17
FR1463292A (fr) 1966-12-23
BE675012A (h) 1966-07-12
NL6600321A (h) 1966-07-13
GB1104561A (en) 1968-02-28

Similar Documents

Publication Publication Date Title
US3380091A (en) Single point mooring arrangement for tank ships
US3442245A (en) Rigid arm mooring means
US3155069A (en) Mooring arrangements for ships
US3525312A (en) Storage or similar vessel
US3515182A (en) One-point mooring system for loading or unloading a fluid into or from a ship
US3466680A (en) Apparatus for loading and unloading offshore vessels
US3407768A (en) Offshore storage, mooring and loading facility
US3455270A (en) Protective dome for underwater mooring swivel
JP2006525189A (ja) 船舶係泊方法及びシステム
US3751925A (en) Floating oil containment boom
US3236267A (en) Method and apparatus for transferring fluid offshore
KR100420296B1 (ko) 석유 산물의 선적 또는 하적용 선적/하적 접속장치
NO122112B (h)
JPS5940674B2 (ja) １点係留・積荷取扱装置
US5820429A (en) Arrangement in a loading/unloading buoy for use in shallow waters
US3765463A (en) Offshore terminal
US3922992A (en) Single point vessel mooring system
US3093167A (en) Offshore combination ship mooring and ship loading apparatus-bow mooring
KR880002110B1 (ko) 유체 이송용 일점 계류 장치
US4546721A (en) Submerged single point mooring system
US3541622A (en) Floating pier for loading and unloading vessels
GB2328197A (en) Fluid transfer system
US3674062A (en) Offshore loading and unloading of tankers
US3472293A (en) Mooring and fluid transferring method and apparatus
US5237948A (en) Mooring system for oil tanker storage vessel or the like