Operations
Load-Chart Improvement
Cut the dynamic factor on an offshore lift and recover crane capacity the load chart would otherwise derate away.
Every offshore lift derates the crane's static load chart by a dynamic factor driven by the relative motion between crane tip and load. When that factor climbs above the crane's design value, usable capacity falls and the operation either waits for calmer water or down-sizes the payload. Heave compensation reduces the relative velocity, holding the dynamic factor at or near the crane's design value so more of the rated load chart stays available. The result is a wider weather window and a de-risked lift, sized against DNV-ST-0378 and DNV-RP-N103.
What we control
Reduce the dynamic factor
The dynamic factor is driven by the relative motion between crane tip and load. A RIGEL passive heave compensator absorbs that relative motion, lowering the factor so the crane keeps more of its rated capacity.
Preset for the planned load
ANTARES is an adaptive passive compensator whose gas spring and damping can be tuned to the specific payload and sea state, holding compensation efficiency where a fixed unit would drift off its working point.
Hold capacity at heavy SWL
For heavy subsea lifts beyond the RIGEL range, CYGNUS uses a cross-accumulator configuration to deliver high passive capacity at lower weight, keeping the dynamic factor in check where it matters most.
Active stroke when passive is not enough
Where passive and adaptive passive cannot meet the target factor, VEGA active heave compensation drives the stroke against measured motion to suppress relative velocity directly. (In development.)
Choose the right compensator
The engineering behind it
For the full method and worked examples, see the engineering guide — forces are sized to DNV-RP-N103 and checked against the crane’s derated capacity.
Recover crane capacity on your next lift — talk to our engineers
Send SWL, stroke, sea state, payload and operation sequence. We’ll come back with a recommended compensator, an operating-window view and the next engineering step.