Lankhorst Offshore for deepwater deployment

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Deepwater Deployment

Deepwater deployment

Going deep...

Without fibre ropes, many of today’s deepwater projects would be beyond all but the largest cranes. The weight of steel wire ropes makes wire rope lifting/lowering systems both inefficient and impractical at water depths greater than 2,000m - 3,000m. Development of the LANKO®DEEP AHC fibre rope by Lankhorst Offshore is bringing deepwater projects within the reach of smaller, more costeffective lifting systems and vessels.

LANKO®DEEP AHC fibre rope has been designed from the outset for deepwater lowering and recovery projects. It offers significant operational and environmental benefits compared with steel wire ropes. Operationally the ropes are easier to handle and allow engineers to lift and deploy the maximum load without the need to factor in the self-weight of steel wire.

Lankhorst Offshore offers an integrated approach to fibre rope deployment systems in which the LANKO®DEEP AHC rope yarn and rope construction are optimized for the winch technology. It incorporates fully optimised cyclic bending over sheave (CBOS) fatigue and load bearing characteristics making it ideal for use in the deepwater deployment winch systems. LANKO®DEEP AHC allows the efficient spooling of long lengths of fibre rope without the risk of rope cutting into lower spooled layers causing handling and abrasion issues that have, until now, limited the use of fibre rope in deepwater deployments.

LANKO®DEEP AHC rope has featured in the award winning fibre rope deployment ‘Soft Rope System’ in collaboration with DSM Dyneema and Deep Tek winch technology. It is also the rope technology underpinning the development of the FibreTrac offshore crane developed by MacGregor. The LANKO®DEEP AHC rope is deployed on a novel capstan, developed by Parkburn Precision Handling Systems as a capstant winch.

Using LANKO®DEEP AHC fibre-rope technology enables crane and winch developers to take advantage of their system’s full lifting capacity at practically any depth. Lankhorst Offshore offers technical support and testing facilities to assist companies looking for a competitive edge in offshore lifting projects.

Why Lankhorst offshore?

The weight of steel wire ropes makes wire rope lifting / lowering systems both inefficient and impractical at water depths greater than 2,000m. At 3,000m, the lifting capacity is reduced by 50%; the other 50% is to support the weight of the steel wire. The solution to optimising lift and lowering capacity is to use a Fibre Rope Deployment System (FRDS). The weight of fibre rope is much less than the steel wire rope, making them almost neutrally buoyant when used in water and with a 100% crane capacity, irrespective of the water depth.

Lankhorst Offshore has a dedicated rope test machine for loads up to 1,200 tonnes. It can also conduct tension-tension fatigue testing of ropes to any fatigue regime specified by clients and certified verification authorities. The test facility can be used for proof loading and length verification of tethers up to 25m in accordance with various industry standards such as ABS, BV and DNV GL rules.

Our sales engineering support team provides invaluable technical support to all our customers. The latest Computer Aided Design and DeskTop Publishing technology allow us to produce “As Built” drawings, and fully documented manuals for any deepwater deployment system. In addition to a fully equipped chemical laboratory for forensic analyses, we have direct access to in-house computer controlled testing equipment to evaluate, reverse bend, elongation, abrasion, tensile loading of yarn and fibre ropes with a load capacity up to 1,200 tonnes.

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+351 229 619 200

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Rope solution for Deepwater Deployment

12x3 Dyneema® fibre

LANKO®DEEP AHC

more information on Lanko®deep AHC

Deepwater Deployment systems

Fibre Rope Deployment System (FRDS)

The solution to optimising lift and lowering capacity is to use a Fibre Rope Deployment System (FRDS). The weight of fibre rope is much less than the steel wire rope, making them almost neutrally buoyant when used in water and with a 100% crane capacity, irrespective of the water depth.

For new vessels, the a Fibre Rope Deployment System (FRDS) makes it possible to use the crane’s full capacity at 3,000m water depth with the following advantages:

smaller winches and sheaves
lower investment costs
the opportunity to use smaller vessel

For existing vessels, the flexibility of the FRDS approach enables cranes to be retrofit to accommodate the FRDS fibre rope system.