Norwegian Dynamics RIGEL

Basic Passive Heave Compensator

RIGEL is a basic passive heave compensator for predictable splash-zone crossings and standard subsea lifts. It is the go-to choice when the operation needs reliable dynamic-load reduction without adaptive or active control.

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Rugged Simplicity

RIGEL is a single cylinder passive heave compensator unit, with a simple and reliable design, that has competitive advantages:

  • Light weight
  • Low cost
  • Comparatively low stiffness
  • Externally adjustable bi-directional damping
  • Fast gas filling
  • Overpressure protection
  • Bi-directional end damping

55 - 1000 tonne

Maximum force

1 - 6 m

Stroke length

3000 m

Depth rating

∞

Adjustable damping

DNV type approval certification

Classification

RIGEL basic passive heave compensator is designed, classed and tested according to DNV ST-0378.

Side view of RIGEL Basic PHC 150t/3m

All-in-one package

Cylinder, valves and accumulator integrated into one compact package that is well suited for rough offshore usage. Comes with shackles, lifting points and supportive feet.

Sustainability

RIGEL is compatible with biodegradable hydraulic fluids for environmentally sensitive operations. It is designed for a long service life with minimal maintenance, reducing waste and environmental impact.

Committed To Safety

We follow and exceed the testing requirements in DNV RP-N202. All Norwegian Dynamics subsea compensators have double seals to protect against water ingress. RIGEL features a relief valve that prevents overpressure, adjustable return damping that ensures safe retraction speeds and bidirectional end damping that protects the compensator from excessive shocks.

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Engineered for the Field

Every detail of RIGEL is shaped by real-world offshore operations. Common failure points are eliminated, and maintenance is simplified for harsh environments.

  • Biodegradable hydraulic fluid
  • Rapid mobilization
  • CFD-optimized damping
  • Field-proven design updates

Application videos

Frequently Asked Questions

RIGEL Basic PHC is well suited for predictable splash-zone crossings and standard subsea landing/retrieval operations. It can also be used for simple shock-absorption duties.

RIGEL Basic PHC combines a hydraulic cylinder with a gas accumulator. The gas accumulator provides the spring effect while the oil flow is precisely controlled between the cylinder and accumulator to provide damping.

RIGEL Basic PHC is usually fitted to the crane hook via slings and connected to the payload via slings.
  • Reduced leakage risk
  • Easier and much faster filling of gas
  • Easier and much faster filling of oil
  • Easier air bleeding
  • Lower stiffness
  • Lower weight
  • Externally adjustable extension damping
  • Externally adjustable return damping
  • Lifting points for easier handling
  • Support feet to avoid rolling
  • Better filling kit
  • Easier to use calculation sheet

Request Further Information

RIGEL configurations from approximately USD 35,000. Lead time and project pricing depends on capacity, stroke and classification — fill in the form below and we’ll send drawings, datasheet and a project-specific quotation.