Active Heave Compensation
In development · design targets belowVEGA is the active heave compensation product family for operations where active feedback is required. VEGA-T is the initial product choice for topside motion compensation; VEGA-S covers subsea active compensation when passive or adaptive passive compensation is not sufficient.
and subject to change
Active control — no umbilical
Automatic damping control and MRU-driven active cylinder control, powered by a large onboard battery — an active system with no external power and no umbilical.
- Automatic damping control
- Active cylinder control — MRU-driven
- Self-centering spring
- Battery (large) — no umbilical
- No external power during the operation
Two variants, one product family
Topside motion compensation
The initial product choice for topside motion compensation — active feedback where the operation is run from deck.
Subsea active compensation
Covers subsea active heave compensation for the harder cases — when passive or adaptive passive compensation is not sufficient to hold the load within the operating window.
What active adds
The MRU measures vessel motion
A motion reference unit measures the vessel’s heave in real time — the feedback signal a passive system does not have.
Active cylinder control drives the stroke
The cylinder is actively controlled against the measured motion, with automatic damping control — rather than reacting passively through a gas spring alone.
Battery-powered, no umbilical
A large onboard battery powers the system — no external power, no deck HPU and no umbilical during the operation.
When VEGA is the right choice
Active feedback is required and passive or adaptive passive compensation cannot hold the load within the operating window.
Screened before it is chosen
Send SWL, stroke, sea state, payload and operation sequence — the team screens the case and confirms the practical product fit before any hardware is discussed.
Status
VEGA is in development. The load and stroke ranges on this page are design targets, and configurations are being defined against real lift cases — early input shapes the first units.
Sense, compute, correct — one loop
The concept architecture behind VEGA: an MRU senses the vessel’s heave, the control unit computes the correction, and the active cylinder strokes against the motion — all of it powered by the onboard battery bank.
Concept architecture — VEGA is in development; configurations are being defined. The diagram shows the system concept, not a build drawing.
Where VEGA sits
The control level rises across the family — from manually set passive units to full active feedback.
VEGA’s lane in the Knowledge Hub
Active heave compensation
What active feedback does that a passive spring cannot — and what it costs.
Read → KB · FUNDAMENTALSMotion reference units
The sensor behind every active system — how an MRU measures vessel motion.
Read → KB · SELECTIONHeave compensator selection
RIGEL, CYGNUS, ANTARES or VEGA — a practical selector for your lift case.
Read →VEGA, answered
When should I choose VEGA?
What are VEGA-T and VEGA-S?
VEGA is in development — what does that mean for my project?
Discuss VEGA.
Indicative only — final pricing depends on capacity, stroke and classification requirements.
Share the lift data and operation sequence. Norwegian Dynamics will review the case and return the recommended product path and next engineering step.