There is described a hoisting system and method of lifting that make use of a particular fibre rope. The fibre rope includes a plurality of magnets that are embedded within the fibre rope and spaced apart along the rope with a known axial distance between the magnets. The system may include a fibre rope hoisting speed sensor, and a magnetic field sensor that can sense the presence of the magnetic field of the embedded magnets. Using the sensors, the hoisting speed of the rope may be determined by: measuring the time between the passing of consecutive magnets by using the magnetic field sensor; calculating the distance between consecutive magnets using the hoisting speed sensor and the measured time between the passing of the consecutive magnets; and comparing the calculated distance between the magnets with an original, predefined distance between the magnets.

The present invention relates to a mooring rope for use in subsea mooring, or a substantially synthetic rope thereof, said synthetic rope comprising a rope core and a layered shell arranged around the rope core, said the shell having a braided outer shell layer. The shell comprises sub-surface buoyancy elements, suitable for use in a subsea environment, extending in radial direction between the rope core and the outer shell.

A mixed rope used for oceanographic buoy mooring system, comprises mixed core rope of metal and fiber and cover rope, wherein, the mixed core rope of metal and fiber comprises metal coil spring and fiber supporting core inside the metal coil spring; the cover rope is woven of several number of twisted strand; the mass content of the mixed core rope of metal and fiber is not greater than 20% of the mass of mixed rope, the mass content of the cover rope is not less than 80% of the mass of the mixed rope. Mixed rope used for oceanographic mooring system disclosed in present embodiments has small linear density and high fracture strength, may be used as data communication channel from under-water sensor to the over-water receiver, being soft, light and easy to deploy, the mixed rope can be used as the upper part of the oceanographic buoy mooring system with prospective application.

Disclosed is a blended rope having an outer sheath (8) enclosing at least a strength member (7), the strength member (7) having high-strength synthetic fibers, the strength member (7) being a blended strength member (7) formed with a combination of ARAMID fibers and HMPE fibers, the blended strength member comprising a non-homogeneous distribution of the ARAMID and HMPE fibers, wherein the weight ratio of ARAMID to HMPE in the strength member (7) is preferably a minimum of 80:20.

An adjustable sports rope comprised of a hollow base rope sheath and an adjustment rope. The hollow base rope sheath is a hollow sheath with at least two openings. The adjustment rope enters into the hollow base rope sheath through one of the at least two openings and exits the base rope sheath through another of the at least two openings. The one end of the hollow base rope sheath terminates at a tie point. The end of the adjustment rope disposed furthest from the hollow base rope sheath tie point is also a tie point. By creating a tensile force between the tie point of the hollow base rope sheath and the tie point of the adjustment rope, the hollow base rope sheath will tighten on the adjustment rope, holding the adjustment rope in place.

A rope structure defining first and second ends and comprising first and second directional strands defining a first and second characteristics, respectively, and at least one additional strand. The second directional strand is distinguishable from the first directional strand and the at least one additional strand is distinguishable from the first and second directional strands based on the first and second characteristics. A first adjacent portion defined by the first directional strand and a second adjacent portion defined by the second directional strand are arranged within intermediate sections of the rope structure such that the first adjacent portion(s) of the first directional strand is(are) closer to the first end of the rope than the second adjacent portion(s) of the second directional strand and the second adjacent portion is(are) closer to the second end of the rope than the first adjacent portion.

Cables for propulsion and/or guidance of cable ferries are disclosed which permit their use on longer ferry routes. One embodiment provides the use of cables for propulsion and/or guidance of cable ferries where the unit weight, density, specific gravity and/or diameter of the cable is variable over the length of the cable. According to one embodiment, heavier or denser cable is used adjacent to the terminals, while lighter or less dense cable is used for a middle section. Where sections have positive buoyancy, the cable may be tethered to one or more anchors. Where sections have negative buoyancy, the cable may be tethered to one or more floats.

A synthetic fiber rope comprising:a core, said core being a laid or braided synthetic fiber strand,a polymer layer, said polymer layer covering said core,a first layer, said first layer having at least six first synthetic fiber strands laid in a first direction surround said polymer layer, anda second layer, said second layer having at least twelve second synthetic fiber strands laid in a second direction surround said first layer.

The present invention is directed to a method and a system for the production of at least one polymeric yarn comprising means for mixing a polymer (1) with a first solvent yielding a mixture; means for homogenizing the mixture; means for rendering the mixture inert (21, 22, 23); means for dipping the mixture into a quenching bath (30), wherein an air gap is maintained before the mixture reaches the quenching bath (30) liquid surface forming at least one polymeric yarn; means for drawing (41) the at least one polymeric yarn at least once; means for washing (5) the at least one polymeric yarn with a second solvent that is more volatile than the first solvent; means for heating the at least one polymeric yarn (6); means for drawing at room temperature (7) the at least one polymeric yarn at least once; and means for heat drawing (8) the at least one polymeric yarn at least once. The instant invention also concerns a system and method of dosing a polymer mixture with a first solvent into an extruder (26), a device (5), a system and a method of solvent extraction from at least one polymeric yarn, and a method and system of mechanical pre-recovery (4) of at least one liquid in at least one polymeric yarn.

A polyethylene fiber wherein when a free induction decay (M(t)) of the polyethylene fiber at 90 C. measured by a pulsed nuclear magnetic resonance (NMR) solid echo method is approximated to three components of a component () having a lowest mobility, a component () having an intermediate mobility, and a component () having a highest mobility, by fitting using formula 1 (M(t)= exp(()(t/T.sub.).sup.2)sin bt/bt+ exp((1/Wa)(t/T.sub.).sup.Wa)+ exp(t/T.sub.)), a composition fraction of the component () having the highest mobility is 1% or more and 10% or less, and a relaxation time of the component () having the highest mobility is 100 s or more and 1000 s or less.