OrcaFlex 11.1

Release details

The latest release of OrcaFlex 11.1 is OrcaFlex 11.1b.

The new features introduced in OrcaFlex 11.1 can be viewed online in the OrcaFlex help file. The OrcaFlex 11.1 help file can also be downloaded:


To upgrade to OrcaFlex 11.1b from any previous version, 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 11.1a. 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 11.1 isĀ available in the news section.

Known bugs in version 11.1b


  • The line feeding payout rate was not taking into account the new ramp start time and ramp finish time data that was added in 11.1a. Instead, the ramp of payout rate would always have occurred between the simulation start time and time 0, this interval always being the build-up period in previous versions of OrcaFlex.
  • In versions 11.1a and 11.1b, seabed friction for line drag chain attachments was mistakenly excluded during static analysis of standard model types. Seabed friction was correctly applied during dynamics, and during static analysis of a restart for drag chains that are present in the parent model.
  • The line expansion factor was not being applied for models with dynamics disabled.

These bugs will be fixed in 11.1c.


  • A floating point overflow error may have occurred during a full QTF calculation if the model had infinite water depth and contained sufficiently short waves.
  • Performing a calculation that uses intermediate values would erroneously mark the data as having changed since it was last saved.

These bugs will be fixed in 11.1c.