Hydrodynamics

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Lloyd's Register Energy provide analysis of ship motion performance and hydrodynamic loads for marine and offshore structures.


Deepwater developments and economic pressures have meant increased demands on in-service vessels. Determining reliability is essential to maintaining a safe and cost effective offshore production and storage fleet. 

Lloyd's Register Energy hydrodyniamicists predict fundamental load for structural strength and fatigue assessment. We utilize a frequency domain three dimensional boundary model to estimate distribution of hydrodynamic pressure on the motion of floating offshore production and storage structures.

The following effects can be taken into account when conducting analysis:

  • Structure and wave interaction
  • Ship-to-wave interaction
  • Hull-to-hull interaction for multi-hull vessel model
  • Ship-to-ship interaction for a multi-structure model
  • Non-ship hull response
  • Finite water depth
  • Ship speed
  • Viscous damping for roll motion
  • Coupled liquid flow in partially filled tanks
  • Mooring between the structure and earth or between two structures

Hydrodynamics services include:

  • Analysis can be provided for specific tasks
  • Analysis of hydrodynamic internal load at number of sections along the vessels
  • Environmental condition determination
  • Hydrodynamic pressure and ship motion in different wave condition for a vessel at different speed
  • Hydrodynamic model construction
  • Hydrodynamic pressure and ship motion in deep water or shallow water
  • Hydrodynamic pressure and ship motion coupled with the liquid flow in tanks for a LNGC loading at a production base
  • RAO analysis for structural responses
  • Short and long-term statistical analysis
  • The hydrodynamic analysis results can be automatically transferred to the structural analysis through Lloyd’s Register software