WO2016089215A1 - Mooring, lifting and/or towing line and method for making the same - Google Patents

Mooring, lifting and/or towing line and method for making the same Download PDF

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Publication number
WO2016089215A1
WO2016089215A1 PCT/NO2015/050230 NO2015050230W WO2016089215A1 WO 2016089215 A1 WO2016089215 A1 WO 2016089215A1 NO 2015050230 W NO2015050230 W NO 2015050230W WO 2016089215 A1 WO2016089215 A1 WO 2016089215A1
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WO
WIPO (PCT)
Prior art keywords
line
mooring
core line
lifting
length
Prior art date
Application number
PCT/NO2015/050230
Other languages
French (fr)
Inventor
Ole Kristoffer Torsvik
Original Assignee
Intellisafe As
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 Intellisafe As filed Critical Intellisafe As
Publication of WO2016089215A1 publication Critical patent/WO2016089215A1/en

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/24—Ropes or cables with a prematurely failing element
    • 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
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2067—Cores characterised by the elongation or tension behaviour
    • D07B2201/2068—Cores characterised by the elongation or tension behaviour having a load bearing function
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2061—Ship moorings

Definitions

  • the present invention relates to an arrangement and method for increasing safety when using mooring-, lifting- and/or towing lines, as well as such a mooring-, lifting- and/or towing line.
  • the so-called SafeCore arrangement is based upon a long experience in advanced ship handling, mooring and/or towing operations, from e.g. pelagic trawling in the Atlantic Ocean to e.g. developing iceberg towing solutions and obtaining safe drilling operations at the vest coast of Greenland.
  • the present invention increases and/or improves the quality of ropes and safety procedures around mooring, lifting and/or towing operations.
  • Fig. 1A-1B show towing operations with respectively a known rope or line (fig. 1A) and a rope or line according to the present invention (IB), where rope / line breaking and snap back appear.
  • Fig. 2A-2B show seabed mooring operations with respectively a known rope or line (fig. 2A) and a rope or line according to the present invention (2B), where rope / line breaking and snap back appear.
  • Fig. 3A-3B show ship mooring operations with respectively a known rope or line (fig. 3A) and a rope or line according to the present invention (3B), where rope / line breaking and snap back appear.
  • Fig. 4A-4C illustrate a first embodiment of a rope or line according to the present invention showing different stages of the rope or line under load.
  • Fig. 5A-5B illustrate in perspective the rope / line embodiment according respectively to fig. 4A-4B.
  • Fig. 6A-6C illustrate a second embodiment of a rope or line according to the present invention showing different stages of the rope or line under load.
  • Fig. 7 shows a third embodiment of a rope or line according to the present invention.
  • Fig. 8 shows in details the inner core line of the third embodiment of the rope or line according to the present invention.
  • Fig. 9A-9D illustrate in details a possible ring-shaped energy absorbing and breaking link fastening device for the third embodiment of a rope or line according to the present invention, and its manufacturing steps.
  • Fig. 1A is showing a towing operation with a known rope or line 11 where when / if the rope / line gets broken a snap back appears (see to the right). The snap back can cause great damage(s) to the ship and/or the crew. The loose ends of the rope or line can be tangled up in the ships propeller. If the main line breaks, some difficulties with passing or getting a new tow or towing line or rope over to the towed object 12 can be experienced. Fig.
  • IB is showing a towing operation with a rope or line 10 according to the present invention (IB), where when / if the rope / line gets broken the energy resulting therefrom will be absorbed due to the rope or line 10 construction and snap back will not appear (or it will be quite week or reduced).
  • Fig. 2A is showing a seabed mooring operation using a known rope or line 11, where when / if the rope / line breaks a snap back will appear (see below).
  • Working below the sea surface with advanced equipment or seabed mooring requires a safe connection to the mother ship or rig 13. Retrieval of lost equipment is extremely complicated, time consuming and expensive.
  • Fig. 2B is showing a seabed mooring operation using a rope or line 10 according to the present invention. Based on experience and dialogue with the industry, it is of a great interest to have a second barrier, such as the SafeCore arrangement 10, if the main connection breaks.
  • FIG. 3A shows a ship 14 mooring operation using a known rope or line 11, where rope / line breaking will cause the appearance of a snap back (see below).
  • Fig. 3B shows a ship 14 mooring operation using a rope or line 10 according to the present invention.
  • Using the SafeCore arrangement 10 will reduce the risk of accidents to a minimum.
  • the SafeCore arrangement 10 will also allow easy reeling over a new mooring line, if the primary line breaks.
  • a mooring, lifting and/or towing line 10 according to three possible embodiments is illustrated on fig. 4A-4C, 5A-5B (a first embodiment), 6A-6C (a second embodiment) and 7-8 (a third embodiment).
  • the line or rope 10 comprises an inner core line 3.
  • the inner core line 3 is continuously arranged in an axial or longitudinal direction from a first end 1 of the mooring, lifting and/or towing line or rope 10 to a second end 2 of the mooring, lifting and/or towing line or rope 10 in the following manner: the core line 3 is folded at a first point 71 and is brought along with a first predetermined core line 3 length Li in the axial or longitudinal direction of the line or rope 10 in a first direction towards the first end 1 of the line or rope 10, and the core line 3 is then folded at a second point 72 and is brought along with a second predetermined core line 3 length l_2 in the axial or longitudinal direction of the line or rope 10 in a second direction, opposite to the first direction, towards the second end 2 of the line or rope 10, wherein the second predetermined core line 3 length l_2 is bigger than the first
  • predetermined core line 3 length Li and - the core line 3 is folded at a third point 73 and is brought along with a third predetermined core line 3 length l_3 in the axial or longitudinal direction of the mooring, lifting and/or towing line or rope 10 in the first direction towards the first end 1 of the line or rope 10, and is then folded at a fourth point 74 for bringing the core line 3 in the second direction towards the second end 2 of the line or rope 10, wherein the third predetermined core line 3 length L3 is less than the second predetermined core line 3 length L2, creating thus a desired loop pattern and/or form which is repeated throughout the entire or a predetermined length of the mooring, lifting and/or towing line 10, wherein energy absorbing and breaking link fastening devices 41 (fig. 4A-4C, 5A-5B and 6A-6C), 42 (fig. 7-8) are arranged to keep the core line 3 in the desired loop pattern, form and/or positon.
  • energy absorbing and breaking link fastening devices 41 (fig. 4A
  • the inner core line 3 can be surrounded and protected by a protection cover 5 of the rope or line 10.
  • the protection cover 5 can be surrounded by an outer jacket or sheath 6 of the rope or line 10.
  • the second predetermined core line 3 length L2 defined as the distance between the second 72 and third 73 folding points, can be approximately equal or bigger than the sum of the first predetermined core line 3 length Li, defined as the distance between the first 71 and second 72 folding points, and the third predetermined core line 3 length L3, defined as distance between the third 73 and fourth 74 folding points.
  • the proportion or correlation between the first Li, second L2 and third L3 lengths can be defined by the formula : L2 > Li + L3.
  • another embodiment with the proportion or correlation L2 > Li + L3 can be used.
  • even other embodiment with the proportion or correlation L2 ⁇ Li + L3 can be used (not shown).
  • the core line 3 can have a flat cross-sectional form. See the embodiments on fig. 4A-4C, 5A-5B and 6A-6C.
  • the energy absorbing and breaking link fastening devices 41 can be at least one fiber or string or integrated webbing 41 that is sewn in a certain manner on the flat side of the core line 3.
  • Said at least one fiber or string 41 can be is sewn in one of the following manners: i) using only one sewing manner 41c (see fig. 6A-6C); and ii) using at least two sewing manners (see fig. 4A-4C and 5A-5B), where the first sewing manner 41a for a
  • predetermined length is stronger than the second sewing manner 41b for another predetermined length, and where the second sewing manner 41b is applied randomly or with at least one predetermined step (e.g. see fig. 4A-4C and 5A-5B, where the step is as follows: one length 41b and three lengths 41a).
  • the inner core line 3 can be folded and twisted in a different manner, however the above-described lengths are not changed.
  • the core line 3 can have a round cross-sectional form. See fig. 7-8.
  • the energy absorbing and breaking link fastening devices 42 can be ring-shaped energy absorbing and breaking link fastening devices 42, each connecting two adjacent folding points 71, 74 (fig. 7-8).
  • Fig. 9A-9D illustrate in details a possible ring-shaped energy absorbing and breaking link fastening device 42 for the third embodiment of the rope or line according to the present invention, and its manufacturing steps.
  • Two bushings or sleeves 421 are arranged at each adjacent folding points 71, 74, which are then connected by a string 422 wound thereon 421.
  • the present invention also describes a method for manufacturing a mooring, lifting and/or towing line or rope 10.
  • the line or rope can be arranged with an inner core line 3.
  • the inner core line 3 can be continuously arranged in an axial or longitudinal direction from a first end 1 of the line or rope 10 to a second end 2 of the line or rope 10.
  • the method comprises the following steps: - folding the core line 3 at a first point 71 and bringing it 3 along with a first predetermined core line 3 length Li in the axial or longitudinal direction of the line or rope 10 in a first direction towards the first end 1 of the line or rope 10, folding the core line 3 at a second point 72 and bringing it 3 along with a second predetermined core line 3 length l_2 in the axial or longitudinal direction of the line or rope 10 in a second direction, opposite to the first direction, towards the second end 2 of the line or rope 10, wherein the second predetermined core line 3 length l_2 is substantially bigger or longer than the first predetermined core line 3 length Li, and folding the core line 3 at a third point 73 and bringing it 3 along with a third predetermined core line 3 length l_3 in the axial or longitudinal direction of the line or rope 10 in the first direction towards the first end 1 of the line or rope 10, and folding the core line 3 at a fourth point 74 for bringing the core line 3 in the second direction towards the second end 2
  • the inner core line 3 can be e.g. made of a Dyneema fiber, polyester, nylon, poly- propylene, etc., but is not limited only thereto.
  • the stiches 41 (see fig. 4B-4C, 5B, 6B-6C) or the energy absorbing and breaking link fastening devices 42 (fig. 9D) will be (gradually) torn or broken or worn apart. Then the energy released when the rope or line 10 is broken gradually will be absorbed by the tearing or wearing of the threads or seams 41. In this way, the snap back is avoided.
  • the line or rope 10 in a folded and sewn condition the line or rope 10 can be made e.g., but not limited thereto, to be three times shorter than when in a completely worn up condition (with all stiches 41 torn apart), and can be adapted to the main rope. This makes it possible to obtain or get the other end of the rope even after it is worn off or torn apart.

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  • Ropes Or Cables (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

The present invention relates to a mooring, lifting and/or towing line or rope (10) and method for making the same, wherein the line or rope (10) comprises a core line (3) which is folded in a looped or repeated pattern, where the core line (3) is folded at a first point (71), and is brought along with a first predetermined core line (3) length (L1), then folded at a second point (72) and is brought along with a second predetermined core line (3) length (L2) and then folded at a third point (73) and is brought along with a third predetermined core line (3) length (L3), wherein the second predetermined core line (3) length (L2) is bigger than the first predetermined core line (3) length (L1).

Description

Mooring, lifting and/or towing line and method for making the same
The present invention relates to an arrangement and method for increasing safety when using mooring-, lifting- and/or towing lines, as well as such a mooring-, lifting- and/or towing line.
When a mooring-, lifting- and/or towing line or rope breaks, there are three main challenges: 1. Snap back, wherein the breaking results in an uncontrolled snap that potentially can do major harm on personnel and/or equipment. The maximum breaking strength of a rope or line also represents the energy that is released when the rope or line breaks. The impact caused by the snap back can depend on the rope material, which can have different elasticity. 2. Losing contact with whatever is connected to the other end (being a bollard on a quay, a vessel under tow or subsea equipment, etc.), when the rope or line breaks. 3. Loose rope or line ends, after the breaking, can cause a danger, e.g. when / if floating close to the propeller.
Breaking of lines or ropes do happen in all kinds of operations, resulting in dangerous and unwanted situations. There is therefore a need for solving the above-mentioned problems and/or challenges.
The so-called SafeCore arrangement is based upon a long experience in advanced ship handling, mooring and/or towing operations, from e.g. pelagic trawling in the Atlantic Ocean to e.g. developing iceberg towing solutions and obtaining safe drilling operations at the vest coast of Greenland. The present invention increases and/or improves the quality of ropes and safety procedures around mooring, lifting and/or towing operations.
The main features of the present invention are given in the independent claims.
Additional features of the present invention are given in the dependent claims.
Fig. 1A-1B show towing operations with respectively a known rope or line (fig. 1A) and a rope or line according to the present invention (IB), where rope / line breaking and snap back appear. Fig. 2A-2B show seabed mooring operations with respectively a known rope or line (fig. 2A) and a rope or line according to the present invention (2B), where rope / line breaking and snap back appear.
Fig. 3A-3B show ship mooring operations with respectively a known rope or line (fig. 3A) and a rope or line according to the present invention (3B), where rope / line breaking and snap back appear.
Fig. 4A-4C illustrate a first embodiment of a rope or line according to the present invention showing different stages of the rope or line under load.
Fig. 5A-5B illustrate in perspective the rope / line embodiment according respectively to fig. 4A-4B.
Fig. 6A-6C illustrate a second embodiment of a rope or line according to the present invention showing different stages of the rope or line under load.
Fig. 7 shows a third embodiment of a rope or line according to the present invention. Fig. 8 shows in details the inner core line of the third embodiment of the rope or line according to the present invention.
Fig. 9A-9D illustrate in details a possible ring-shaped energy absorbing and breaking link fastening device for the third embodiment of a rope or line according to the present invention, and its manufacturing steps.
Fig. 1A is showing a towing operation with a known rope or line 11 where when / if the rope / line gets broken a snap back appears (see to the right). The snap back can cause great damage(s) to the ship and/or the crew. The loose ends of the rope or line can be tangled up in the ships propeller. If the main line breaks, some difficulties with passing or getting a new tow or towing line or rope over to the towed object 12 can be experienced. Fig. IB is showing a towing operation with a rope or line 10 according to the present invention (IB), where when / if the rope / line gets broken the energy resulting therefrom will be absorbed due to the rope or line 10 construction and snap back will not appear (or it will be quite week or reduced).
Fig. 2A is showing a seabed mooring operation using a known rope or line 11, where when / if the rope / line breaks a snap back will appear (see below). Working below the sea surface with advanced equipment or seabed mooring requires a safe connection to the mother ship or rig 13. Retrieval of lost equipment is extremely complicated, time consuming and expensive. Fig. 2B is showing a seabed mooring operation using a rope or line 10 according to the present invention. Based on experience and dialogue with the industry, it is of a great interest to have a second barrier, such as the SafeCore arrangement 10, if the main connection breaks.
When mooring a ship 14 the danger of a snap back must always be considered. Fig. 3A shows a ship 14 mooring operation using a known rope or line 11, where rope / line breaking will cause the appearance of a snap back (see below). Fig. 3B shows a ship 14 mooring operation using a rope or line 10 according to the present invention. Using the SafeCore arrangement 10 will reduce the risk of accidents to a minimum. The SafeCore arrangement 10 will also allow easy reeling over a new mooring line, if the primary line breaks.
A mooring, lifting and/or towing line 10 according to three possible embodiments is illustrated on fig. 4A-4C, 5A-5B (a first embodiment), 6A-6C (a second embodiment) and 7-8 (a third embodiment). The line or rope 10 comprises an inner core line 3. The inner core line 3 is continuously arranged in an axial or longitudinal direction from a first end 1 of the mooring, lifting and/or towing line or rope 10 to a second end 2 of the mooring, lifting and/or towing line or rope 10 in the following manner: the core line 3 is folded at a first point 71 and is brought along with a first predetermined core line 3 length Li in the axial or longitudinal direction of the line or rope 10 in a first direction towards the first end 1 of the line or rope 10, and the core line 3 is then folded at a second point 72 and is brought along with a second predetermined core line 3 length l_2 in the axial or longitudinal direction of the line or rope 10 in a second direction, opposite to the first direction, towards the second end 2 of the line or rope 10, wherein the second predetermined core line 3 length l_2 is bigger than the first
predetermined core line 3 length Li, and - the core line 3 is folded at a third point 73 and is brought along with a third predetermined core line 3 length l_3 in the axial or longitudinal direction of the mooring, lifting and/or towing line or rope 10 in the first direction towards the first end 1 of the line or rope 10, and is then folded at a fourth point 74 for bringing the core line 3 in the second direction towards the second end 2 of the line or rope 10, wherein the third predetermined core line 3 length L3 is less than the second predetermined core line 3 length L2, creating thus a desired loop pattern and/or form which is repeated throughout the entire or a predetermined length of the mooring, lifting and/or towing line 10, wherein energy absorbing and breaking link fastening devices 41 (fig. 4A-4C, 5A-5B and 6A-6C), 42 (fig. 7-8) are arranged to keep the core line 3 in the desired loop pattern, form and/or positon.
The inner core line 3 can be surrounded and protected by a protection cover 5 of the rope or line 10. The protection cover 5 can be surrounded by an outer jacket or sheath 6 of the rope or line 10.
In an embodiment of the invention, the second predetermined core line 3 length L2, defined as the distance between the second 72 and third 73 folding points, can be approximately equal or bigger than the sum of the first predetermined core line 3 length Li, defined as the distance between the first 71 and second 72 folding points, and the third predetermined core line 3 length L3, defined as distance between the third 73 and fourth 74 folding points. See fig. 4A, 6A and 8. In other words, the proportion or correlation between the first Li, second L2 and third L3 lengths can be defined by the formula : L2 > Li + L3. Alternatively, another embodiment with the proportion or correlation L2 > Li + L3 can be used. Moreover, even other embodiment with the proportion or correlation L2 < Li + L3 can be used (not shown).
The core line 3 can have a flat cross-sectional form. See the embodiments on fig. 4A-4C, 5A-5B and 6A-6C. The energy absorbing and breaking link fastening devices 41 can be at least one fiber or string or integrated webbing 41 that is sewn in a certain manner on the flat side of the core line 3.
Said at least one fiber or string 41 can be is sewn in one of the following manners: i) using only one sewing manner 41c (see fig. 6A-6C); and ii) using at least two sewing manners (see fig. 4A-4C and 5A-5B), where the first sewing manner 41a for a
predetermined length is stronger than the second sewing manner 41b for another predetermined length, and where the second sewing manner 41b is applied randomly or with at least one predetermined step (e.g. see fig. 4A-4C and 5A-5B, where the step is as follows: one length 41b and three lengths 41a).
As it is evident from the embodiments on fig. 4A-4C and 5A-5B and respectively fig. 6A- 6C, the inner core line 3 can be folded and twisted in a different manner, however the above-described lengths are not changed.
In a different embodiment, the core line 3 can have a round cross-sectional form. See fig. 7-8. When the proportion or correlation between the first Li, second l_2 and third l_3 lengths is defined by the formula : l_2 = Li + l_3, then the energy absorbing and breaking link fastening devices 42 can be ring-shaped energy absorbing and breaking link fastening devices 42, each connecting two adjacent folding points 71, 74 (fig. 7-8).
Fig. 9A-9D illustrate in details a possible ring-shaped energy absorbing and breaking link fastening device 42 for the third embodiment of the rope or line according to the present invention, and its manufacturing steps. Two bushings or sleeves 421 are arranged at each adjacent folding points 71, 74, which are then connected by a string 422 wound thereon 421.
The present invention also describes a method for manufacturing a mooring, lifting and/or towing line or rope 10. The line or rope can be arranged with an inner core line 3. The inner core line 3 can be continuously arranged in an axial or longitudinal direction from a first end 1 of the line or rope 10 to a second end 2 of the line or rope 10. The method comprises the following steps: - folding the core line 3 at a first point 71 and bringing it 3 along with a first predetermined core line 3 length Li in the axial or longitudinal direction of the line or rope 10 in a first direction towards the first end 1 of the line or rope 10, folding the core line 3 at a second point 72 and bringing it 3 along with a second predetermined core line 3 length l_2 in the axial or longitudinal direction of the line or rope 10 in a second direction, opposite to the first direction, towards the second end 2 of the line or rope 10, wherein the second predetermined core line 3 length l_2 is substantially bigger or longer than the first predetermined core line 3 length Li, and folding the core line 3 at a third point 73 and bringing it 3 along with a third predetermined core line 3 length l_3 in the axial or longitudinal direction of the line or rope 10 in the first direction towards the first end 1 of the line or rope 10, and folding the core line 3 at a fourth point 74 for bringing the core line 3 in the second direction towards the second end 2 of the line or rope 10, thus creating a desired loop pattern and/or form, wherein the third predetermined core line 3 length l_3 is substantially less or shorter than the second predetermined core line 3 length l_2, and arranging energy absorbing and breaking link fastening devices 41, 42 in order to keep the core line 3 in the desired loop pattern, form and/or positon, and repeating the desired loop pattern, form and/or positon throughout the entire or a predetermined length of the mooring, lifting and/or towing line or rope 10.
The inner core line 3 can be e.g. made of a Dyneema fiber, polyester, nylon, poly- propylene, etc., but is not limited only thereto.
In case of overload and/or tensile load, the stiches 41 (see fig. 4B-4C, 5B, 6B-6C) or the energy absorbing and breaking link fastening devices 42 (fig. 9D) will be (gradually) torn or broken or worn apart. Then the energy released when the rope or line 10 is broken gradually will be absorbed by the tearing or wearing of the threads or seams 41. In this way, the snap back is avoided. Furthermore, in a folded and sewn condition the line or rope 10 can be made e.g., but not limited thereto, to be three times shorter than when in a completely worn up condition (with all stiches 41 torn apart), and can be adapted to the main rope. This makes it possible to obtain or get the other end of the rope even after it is worn off or torn apart.

Claims

C L A I M S
1. Mooring, lifting and/or towing line (10) comprising an inner core line (3), wherein the inner core line (3) is continuously arranged in an axial or longitudinal direction from a first end (1) of the mooring, lifting and/or towing line (10) to a second end (2) of the mooring, lifting and/or towing line (10) in the following manner: the core line (3) is folded at a first point (71) and is brought along with a first predetermined core line (3) length (Li) in the axial or longitudinal direction of the mooring, lifting and/or towing line (10) in a first direction towards the first end (1) of the mooring, lifting and/or towing line (10), and the core line (3) is then folded at a second point (72) and is brought along with a second predetermined core line (3) length (L2) in the axial or longitudinal direction of the mooring, lifting and/or towing line (10) in a second direction, opposite to the first direction, towards the second end (2) of the mooring, lifting and/or towing line (10), wherein the second predetermined core line (3) length (L2) is bigger than the first predetermined core line (3) length (Li), and the core line (3) is folded at a third point (73) and is brought along with a third predetermined core line (3) length (L3) in the axial or longitudinal direction of the mooring, lifting and/or towing line (10) in the first direction towards the first end (1) of the mooring, lifting and/or towing line (10), and is folded at a fourth point (74) for bringing the core line (3) in the second direction towards the second end (2) of the mooring, lifting and/or towing line (10), wherein the third predetermined core line (3) length (L3) is less than the second predetermined core line (3) length (L2), creating thus a desired loop pattern and/or form which is repeated throughout the entire or a predetermined length of the mooring, lifting and/or towing line (10), wherein energy absorbing and breaking link fastening devices (41, 42) are arranged to keep the core line (3) in the desired loop pattern, form and/or positon.
2. Mooring, lifting and/or towing line (10) according to claim 1, wherein the second predetermined core line (3) length (L2), defined as the distance between the second (72) and third (73) folding points, is approximately equal or bigger than the sum of the first predetermined core line (3) length (Li), defined as the distance between the first (71) and second (72) folding points, and the third predetermined core line (3) length (L3), defined as distance between the third (73) and fourth (74) folding points, namely the proportion or correlation between the first (Li), second (L2) and third (L3) lengths is defined by the formula : L2 > Li + L3.
3. Mooring, lifting and/or towing line (10) according to claim 1 or 2, wherein the core line (3) has a flat cross-sectional form, and the energy absorbing and breaking link fastening devices (41) are at least one fiber that is sewn in a certain manner on the flat side of the core line (3).
4. Mooring, lifting and/or towing line (10) according to claim 3, wherein said at least one fiber (41) is sewn in one of the following manners: i) using only one sewing manner (41c); and ii) using at least two sewing manners, where the first sewing manner (41a) for a predetermined length is stronger than the second sewing manner (41b) for another predetermined length, and where the second sewing manner (41b) is applied randomly or with at least one predetermined step.
5. Mooring, lifting and/or towing line (10) according to claim 1 or 2, wherein the core line (3) has a round cross-sectional form, the proportion or correlation between the first (Li), second (L2) and third (L3) lengths is defined by the formula : L2 = Li + L3, and the energy absorbing and breaking link fastening devices (42) are ring-shaped energy absorbing and breaking link fastening devices, each connecting two adjacent folding points (71, 74).
6. Method for manufacturing a mooring, lifting and/or towing line (10) comprising an inner core line (3), wherein the inner core line (3) is continuously arranged in an axial or longitudinal direction from a first end (1) of the mooring, lifting and/or towing line (10) to a second end (2) of the mooring, lifting and/or towing line (10), the method comprising the following steps: folding the core line (3) at a first point (71) and bringing it along with a first predetermined core line (3) length (Li) in the axial or longitudinal direction of the mooring, lifting and/or towing line (10) in a first direction towards the first end (1) of the mooring, lifting and/or towing line (10), folding the core line (3) at a second point (72) and bringing it along with a second predetermined core line (3) length (L2) in the axial or longitudinal direction of the mooring, lifting and/or towing line (10) in a second direction, opposite to the first direction, towards the second end (2) of the mooring, lifting and/or towing line (10), wherein the second predetermined core line (3) length (L2) is bigger than the first predetermined core line (3) length (Li), and - folding the core line (3) at a third point (73) and bringing it along with a third predetermined core line (3) length (L3) in the axial or longitudinal direction of the mooring, lifting and/or towing line (10) in the first direction towards the first end (1) of the mooring, lifting and/or towing line (10), and folding the core line (3) at a fourth point (74) for bringing the core line (3) in the second direction towards the second end (2) of the mooring, lifting and/or towing line (10), thus creating a desired loop pattern and/or form, wherein the third predetermined core line (3) length (L3) is less than the second predetermined core line (3) length (L2), and arranging energy absorbing and breaking link fastening devices (41, 42) in order to keep the core line (3) in the desired loop pattern, form and/or positon, and repeating the desired loop pattern, form and/or positon throughout the entire or a predetermined length of the mooring, lifting and/or towing line (10).
7. Method according to claim 1, wherein the second predetermined core line (3) length (L2), defined as the distance between the second (72) and third (73) folding points, is approximately equal or bigger than the sum of the first predetermined core line (3) length (Li), defined as the distance between the first (71) and second (72) folding points, and the third predetermined core line (3) length (L3), defined as distance between the third (73) and fourth (74) folding points, namely the proportion or correlation between the first (Li), second (L2) and third (L3) lengths is defined by the formula : L2 >
8. Method according to claim 5 or 6, wherein the core line (3) has a flat cross- sectional form, and the energy absorbing and breaking link fastening devices (41) are at least one fiber that is sewn in a certain manner on the flat side of the core line (3).
9. Method according to claim 8, wherein said at least one fiber (41) is being sewn in one of the following manners: i) using only one sewing manner (41c); and ii) using at least two sewing manners, where the first sewing manner (41a) for a predetermined length is stronger than the second sewing manner (41b) for another predetermined length, and where the second sewing manner (41b) is applied randomly or with at least one predetermined step.
10. Method according to claim 5 or 6, wherein the core line (3) has a round cross- sectional form, the proportion or correlation between the first (Li), second (L2) and third (L3) lengths is defined by the formula : L2 = Li + L3, and the energy absorbing and breaking link fastening devices (42) are ring-shaped energy absorbing and breaking link fastening devices, each connecting two adjacent folding points (71, 74).
11. Mooring, lifting and/or towing line (10) according to any one of claims 1-5, further comprising a protection cover (5) surrounding or arranged over the core line (3).
12. Mooring, lifting and/or towing line (10) according to claim 11, further comprising an outer jacket or sheath (6) surrounding or arranged over the protection cover (5).
PCT/NO2015/050230 2014-12-02 2015-11-30 Mooring, lifting and/or towing line and method for making the same WO2016089215A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022046510A1 (en) * 2020-08-25 2022-03-03 Fields Thomas W Controlled failure point for a rope or mooring loop and method of use thereof
WO2023168509A1 (en) * 2022-03-08 2023-09-14 Coastline Cordage Group Ltd. Break-away release link

Citations (2)

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US4534262A (en) * 1983-04-01 1985-08-13 The United States Of America As Represented By The Secretary Of The Navy Safety mooring line
US5598900A (en) * 1994-10-21 1997-02-04 Surety Manufacturing & Testing Ltd. Horizontal lifeline energy absorber

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534262A (en) * 1983-04-01 1985-08-13 The United States Of America As Represented By The Secretary Of The Navy Safety mooring line
US5598900A (en) * 1994-10-21 1997-02-04 Surety Manufacturing & Testing Ltd. Horizontal lifeline energy absorber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022046510A1 (en) * 2020-08-25 2022-03-03 Fields Thomas W Controlled failure point for a rope or mooring loop and method of use thereof
US11597476B2 (en) 2020-08-25 2023-03-07 Thomas W. Fields Controlled failure point for a rope or mooring loop and method of use thereof
WO2023168509A1 (en) * 2022-03-08 2023-09-14 Coastline Cordage Group Ltd. Break-away release link

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NO338343B1 (en) 2016-08-08

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