Offshore Lifting Knowledge Hub
The physics and practice of heave compensation, shock absorption, and subsea lifting. Use these articles to understand why our products are designed the way they are — from basic wave parameters and vessel response, through passive and active compensation principles, to the engineering trade-offs behind specific offshore operations.
Use the hub to move from lift problem to specification
The Knowledge Hub is organized for engineers, project managers and buyers who need to turn an offshore lifting problem into a practical equipment decision. Start with the operating case: water depth, vessel motion, hook load, allowable landing speed, splash-zone exposure and whether the load is being installed, recovered or held in tension. Those inputs decide whether passive heave compensation, adaptive passive compensation, active heave compensation or a dedicated crane shock absorber is the right direction.
Key topic paths
- Heave compensator selection explains how stroke, load, stiffness and damping affect the safest architecture.
- Passive heave compensation covers simple, robust systems where energy storage and damping do most of the work.
- Adaptive passive heave compensation shows when variable behavior helps widen the operating window without full active control.
- Active heave compensation covers controlled motion systems for demanding operations and tighter landing criteria.
- Crane shock absorption and subsea lifts connect the physics to impact loads, DAF and real offshore procedures.
How to read the articles
Use the short basics articles when you need vocabulary and governing equations. Use the DNV pages when certification, marine warranty or client review is the issue. Use the product-adjacent articles when the next step is a specification, budget quote or feasibility check. When a lift case becomes real, collect load, stroke, sea-state target, crane data and interface drawings; those are the inputs Norwegian Dynamics needs to recommend equipment or an engineering study.
Checklist before specification
Before contacting engineering or comparing equipment, write down the load case in the same language a crane supplier or certification body will use. Include static hook load, expected dynamic amplification, required stroke, maximum allowed load movement, target sea state, water depth, rigging length, crane type, vessel motion reference, available deck space and any DNV or client requirements. Also note what failure mode matters most: peak load, landing impact, snap load, excessive stroke use, heat build-up, control response or operational downtime.
This makes the articles easier to use. The hydrodynamics pages help estimate the environment, the DNV pages help frame acceptance criteria, and the product pages show which compensator or shock absorber family is worth sizing first.