At Seaqualize, by combining springs with arm systems, we balance the weight of heavy loads, so we can move them effortlessly with the sea.
Our patented Balanced Heave Compensation technology represents a step change from Passive and Active Heave Compensators providing a variable passive force on the load.
By providing a constant passive force on the load, it enables active control with unmatched precision, speed, and safety.
Balanced Heave Compensation makes loads feel nearly weightless, allowing transfer systems to handle them gently, without fighting their full weight or large spring forces.
Passive safety combined with unprecedented active control delivers endless operational benefits.
For example: rigging can be hooked up safely, premature lift-offs can be avoided and a Dynamic Amplification Factor of 1,05 or even lower can be guaranteed.
Compact gas volumes and actuation packages enable fast and flexible deployment below the hook and scaling up to ultra heavy loads of 5000mT and above.
Being indifferent to wave frequency, any sea-state can be Seaqualized, anywhere in the world.
Conventional Active Heave Compensation (AHC) systems are built into the vessel and constantly spool heavy winches to stay geostationary. They’re powerful, costly, energy-intensive, and primarily aimed at subsea operations.
More recent developments include Passive Heave Compensators with active components deployed below the hook of a crane. Such devices require large gas volumes and lots of energy to counteract the differences in spring force.
Seaqualize’s Balanced Heave Compensation (BHC) takes a smarter approach.
Our system sits at the hook, measures motion where it matters, and balances the load itself, not the whole crane.
That gives higher accuracy, no wire wear, and enables transfer lifts between moving vessels.
Unlike AHC, BHC provides true 3D compensation, works modularly without vessel integration, and avoids the high CAPEX of built-in systems.
In short: lighter, more precise, and ready when you need it, without the complexity of AHC.
The offshore lifting and installation market is evolving toward greater flexibility, efficiency, and sustainability.
While heavy-lift vessels remain essential, most of the global fleet operates with standard, non-compensated cranes. That limits safe offshore handling in waves.
Traditional AHC systems are large, costly, and permanently built into only a handful of specialized vessels.
Seaqualize’s hook-mounted Balanced Heave Compensation (BHC) makes precision motion-compensated lifting available to the entire fleet. Our compact, modular system turns any conventional crane into a high-performance offshore tool — without modification, integration, or long mobilization times.
This opens opportunities across:
With thousands of active cranes worldwide and strong demand for cost-efficient, low-energy operations, the potential market for portable heave compensation is large, global, and still underserved.
Seaqualize’s technology unlocks that opportunity.
Since 2017, Seaqualize has turned a bold concept — balancing heavy loads in motion — into a proven, commercial technology that’s redefining offshore lifting.
RVO has been a key partner in Seaqualize’s journey from concept to offshore deployment. Starting in 2013, a MIT feasibility study explored how spring balance could be applied in offshore environments. That first step led to a subsidy for testing a spring-balanced scale model of an offshore access bridge at MARIN and to the development of the world’s first all-electric gangway together with Ampelmann.
With RVO’s continued support, we were able to build and test our own technology. A prototype predecessor of the HC750 was trialed offshore with Van Oord, followed by a full demonstration of the HC1100 in collaboration with DEME.
RVO’s backing has been instrumental in bringing a new generation of motion-compensation systems to the conservative and capital-intensive offshore-wind sector.
We regret that the HER+ subsidy program is no longer available and believe that tenders encouraging full-scale demonstrations would greatly accelerate innovation in this rapidly evolving market.
Seaqualize is scaling up, with commercial BHC units operating offshore, partnerships forming across wind, oil & gas, and marine construction, and a digital roadmap (SealinQ) unlocking new recurring-revenue opportunities.
Each milestone builds on the last — from concept to commercial reality — establishing Seaqualize as the leader in next-generation motion compensation.