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Applications 2017-08-29T12:22:34+00:00

Application Areas

Shock Absorption

Enables operations in harsher weather conditions.

Splash Zone Crossing

Reduction of dynamic forces in crane and payload trough the splash zone.

Pile Run Protection

Reduced risk in piling operations.

Subsea Landing

Securing smooth landing of subsea structures.

Load Chart Improvement

Improved capabilities for your crane.

Tension Control

Absorption of forces in crane and wire.

Subsea Retrieval

Safe and efficient recovery of subsea objects. Constant tensioning system, with dampening once the object is loose from the sea floor.

Resonance Avoidance

Avoidance of uncontrolled dynamic forces and escalating movements of load during deep water operations.

Shock Absorption

Enables operations in harsher weather conditions

Cranemaster® protects the crane and the lifted structure by reducing the dynamic amplification factor (DAF) in all lifting phases.

Cranemaster benefits

  • Increasing the operational weather window of the lifting operation.
  • Protection of crane and lifted payload at lift-off and set-down.
  • Immediate response to potential dangerous loads.
  • Enabling crane to maintain its lifting capacity at increased wave height.
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Shock absorption offshore lifting

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Splash zone crossing

Splash Zone Crossing

Reduction of forces in crane and payload through the splash zone

Lowering of payload through splash zone is a critical operational phase, particularly for objects with large surfaces. Several hundred objects of different shape and weight have successfully crossed the splash zone using Cranemaster® units. For critical applications, our new technology CAST – Cranemaster® Advanced Splash Zone Tension Mode will give unsurpassed performance in terms of low DAF and superb ability to avoid slack slings even for large objects and high waves.

Cranemaster benefits

  • Reduction of dynamic force in payload and lifting points during splash zone crossing.
  • Reduction of dynamic load on the crane tip and the hoisting system.
  • Reduction of probability of slack wire during splash zone crossing.
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Pile Run Protection

Reduced risk in piling operations

Sudden free fall of the piles during pile hammering due to layering in the soil, so called pile runs or pile drops, is an increasing concern in the industry. The snap loads following pile runs can be very high, exposing both personnel and equipment to high risk.

Cranemaster benefits

  • Protection of crane and rigging against snap loads during piling.
  • Special Cranemaster® shock absorbers developed in cooperation with key players in the industry.
  • Expensive interruptions in the piling process can be avoided.
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Pile run protection offshore wind installation cranemaster shock absorber

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Subsea landing speed reduction

Subsea Landing

Securing smooth landing of subsea structures

As subsea structures get larger and more complex, landing speed of subsea structures becomes an increasingly important topic. Cranemaster® has been used extensively to reduce motion for subsea lifting operations. Boom tip movements are picked up by the stroke of the Cranemaster® unit and thereby limiting the load movements.

Cranemaster benefits

  • Reduction of landing speed.
  • Increased horizontal stability during landing.
  • Possibility to maintain tension in wire during landing phase.
  • Reduction of peak loads in case of re-lifting.
  • Ship stability – prevention of rapid heeling during landing of heavy loads.
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Load chart improvement lift analysis cranemaster

Load Chart Improvement

Improved capabilities for your crane

For wave heights up to around 2.0 – 2.5 meters,  offshore cranes will normally be able to keep its full onboard capacity. For increased wave heights the load chart for offshore cranes will show a significantly decreasing capacity.

Cranemaster benefits

  • Enables the crane to maintain its lifting capacity at increasing wave heights.
  • Up to 95% of the dynamic forces will be absorbed, protecting crane and load.
  • Revised load chart approved by DNV GL or similar.
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Tension control offshore crane

Tension Control

Constant tension despite vessel movements 

Cranemaster may be used to provide a near constant tension during lifts, installations or removals. Typical examples of use:

  • Removal of objects from the sea floor.
  • Installation of heavy objects to reduce rapid heeling of the vessel.
  • Avoid instability of object between touch-down and fastening.
  • Keep tension during operation (sawing, cutting, etc.).

Cranemaster benefits

  • Fail safe constant tension functionality.
  • Works as a constant tension system, but with added dampening preventing abrupt movements.
  • Overload protection.
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Subsea Retrieval

Safe and efficient recovery of subsea objects 

Retrieval of objects from the sea floor may cause large forces in the crane and wire due to a combination of vessel movement and suction forces.

Cranemaster benefits

  • Absorption of forces in crane and wire, preventing direct coupling between load and boom-tip movement.
  • Works as a constant tensioning system, but with added dampening once object is loose from the sea floor.
  • Overload protection during removal.
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Subsea retrieval wreck removal salvage operation

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Resonance Avoidance

Avoidance of uncontrolled dynamic forces – particularly for deep water operations

The concept of resonance has got increased focus recently, as subsea developments move into deeper waters and weights are increasing.

Cranemaster benefits

  • Avoid uncontrolled dynamic forces and escalating movements of load during deep water operations.
  • With Cranemaster® included in the rigging, system resonance period will be increased.
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Subsea resonance avoidance

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