OrcaFlex 11.4

Release details

The latest release of OrcaFlex 11.4 is OrcaFlex 11.4c.

The new features introduced in OrcaFlex 11.4 can be viewed online:

The documentation can also be downloaded for offline use:

To upgrade to OrcaFlex 11.4c, download the install program from your company’s Orcina software download page. A link to this page was sent to your software administration contact when we released 11.4a. If you do not have access to this page, please contact us.

A more in depth discussion of the major new features introduced in OrcaFlex 11.4 isĀ available in the news section.

Known bugs in version 11.4c


  • Spurious tracked changes appear in the depth column of the profiled seabed data table when opening a text variation or restart file.
  • An access violation error may occur when opening a data form after loading a variation model or restart analysis from a binary data or simulation file created by version 11.1.
  • End B of a prescribed statics line can never begin a dynamics only restart analysis from its calculated position at the end of the parent analysis. Normally, this state is inherited if the end B position data is unchanged between the parent and child analyses, but this is impossible to arrange for this particular case.
  • Setting integer data items using variables in a text data file can sometimes fail, with an unexpected program error.
  • Exported spreadsheet files with .xlsx format can sometimes contain sheet names that are not valid Excel sheet names. These files cannot be opened by Excel. Excel sheet names must be no more than 31 characters long, must not start or finish with ‘, and must not contain any of the following characters: / \ ? * : [ ]. In future releases of OrcaFlex, any such sheet names will be normalised before being exported, with invalid characters being replaced by the _ character.
  • Dynamics only restart analyses would not run for models with winches whose statics control mode had been changed relative to the parent analysis.
  • Running a line feeding model with an open range graph could sometimes result in an access violation error.


  • Loading a binary variation or restart file fails to restore the change tracking state for wave spectra data.

These bugs will be fixed in 11.4d.