Announcing MOSES and Maxsurf 2025 (25.00.02)

The MOSES team is pleased to announce the release of MOSES and Maxsurf 2025 (25.00.02)

MOSES 2025 (25.00.02)

The static and quasi-static stability of floating wind turbines can now be evaluated with MOSES. This is accomplished via three new options on the RARM (righting arm) command: -LOAD, -THRUST, and -TRANSIENT. When either of these options are applied, MOSES will include an additional heeling moment in the righting arm calculations corresponding to wind loads from a turbine rotor in accordance with DNV-ST-0119 (June 2021). For more information on these new options users should consult the MOSES reference manual.

This release also includes extensions to the second order hydrodynamics (QTF) capabilities. All off-diagonal terms in the difference frequency QTF matrix can now be computed directly via Pinkster's approximation, thus improving the calculation of slow-varying drift forces in the time domain, particularly in shallow water.

Other changes include:

  • MOSES Executive:
    • Graphical File navigation is now possible for most MOSES analysis and results files.
    • Picture annotations are now clearer, and all objects hidden from view no longer have their annotations displayed on screen.
    • The OpenFAST wind turbine solvers have been updated to version 3.5.5.
  • MOSES Stability:
    • Compartment PIECES can be defined in Stability and exported to the model data (*.dat) file.
    • Changes have been made to ensure that criteria that fail report a negative margin.

Full details on the changes made to MOSES in version 2025 (25.00.02) can be found in the release announcement

Maxsurf 2025 (25.00.02)

This release of Maxsurf includes useful minor features and bug fixes. These include:

  • Maxsurf Modeler:
    • Improvements have been made to the surface Mesh generation from a set of Markers defining hull sections (Meshes | Add From Markers).
  • Maxsurf Stability:
    • Changes have been made to ensure that criteria that fail report a negative margin; furthermore, the margin is now shown in red for criteria that fail. The margin calculation is different and depends on the inequality used to compare the actual and required values and the sign of the required value.

Full details on the changes made to Maxsurf in version 2025 (25.00.02) can be found in the release announcement

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