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Developer(s) Orcina Ltd.
Initial release December 1985; 32 years ago (1985-12)
Stable release
9.6 / October 2012; 5 years ago (2012-10)
Operating system Microsoft Windows
Platform Intel x86-32 bit
Intel x86-64 bit
Type Finite Element Analysis
License Proprietary commercial software

OrcaFlex is a finite element software package for the analysis of offshore structures, developed by Orcina Ltd.


The first version of OrcaFlex, for MS-DOS was released in 1985. In 1996 OrcaFlex 6 was released, the first Windows version of the software. OrcaFlex 7 was the first 32 bit version to be release, in 1998. The latest versions are available as either 32 or 64 bit programs.


OrcaFlex is used for a wide variety of offshore applications:

  • TTRs
  • SCRs
  • Hybrid Riser Systems
  • Flexibles / Umbilicals
  • Installation
  • Pipelay
  • Decommissioning
  • Towing
  • Moorings
  • Oceanographic
  • Global Performance
  • Moored Renewables


  • 3D, non-linear, large displacement analysis
  • Fully coupled tension, bending & torsion
  • Accurate, efficient and proven FE formulation
  • Robust compression / snatch modelling
  • Robust clash & sliding line-to-line contact
  • Modelling of post-contact behaviour
  • Line slug flow and free flooding effects
  • Implicit and explicit time integration
  • Fully coupled vessel / line analysis
  • Comprehensive vessel load modelling
  • Full sum and difference QTFs
  • Water entry / exit slam loads
  • Full description of wind, wave and current
  • Flat, 2D or 3D seabed profile
  • Linear elastic / non-linear hysteretic / P-y soil
  • Binary and / or text input files
  • Fatigue analysis
  • Extreme value statistics
  • Modal analysis
  • VIV and Interference analysis

External Links[edit]