• MOSES, Statistic Calculation of Double Peak Jonswap Spectrum(-e_period)

    1. Overview

    The purpose of this document is to show what gamma values for 2JONSWAP spectrum MOSES calculate and what is reported when multiple periods are defined with an option "-e_periods". Multiple sea-states with varying mean periods are stored in the database for later use in statistic calculation.  After generating hydrodynamic pressure data, RAOs of the vessel is computed. Motion statistics for several…

    • Tue, Dec 18 2018
  • A Discussion on the OMEGA Option in Equilibrium Calculations in MOSES


    This document presents a discussion on the -omega option that is part of the &EQUI command. The &EQUI command in MOSES computes a static equilibrium position with a modified Newton method.  Also presented is an example when the -omega option in the &EQUI command is used to reach equilibrium.

    Basic Theory

    You can find a good description of the Newton method on Wikipedia.  The article in Wikipedia shows…

    • Wed, Oct 31 2018
  • MOSES CONNECT Edition 10.14 is now available

    The MOSES product team is pleased to announce the availability of MOSES CONNECT Edition (Version on the Fulfillment Center.

    NOTE: This is an update and will overwrite earlier installations of MOSES 10.13, etc.

    Version 10.14 of MOSES includes a Technology Preview of the new MOSES Executive. Installed alongside the classic versions of the MOSES applications, the Executive aims to replace and build on the functionality…

    • Tue, Oct 16 2018
  • Working with Units in MOSES

    This document explains how to set up and interchange the working units in MOSES.

    Two sets of files are used to demonstrate the unit definition and units interchange to assess the longitudinal strength of a barge. The two sets of files can be found on ...\hdesk\runs\samples\how_to directory.

    MOSES v10.14 was used in generating results for this work.

    Specify Analysis Units

    The analysis units are specified with the &DIM…

    • Mon, Oct 15 2018
  • Brief Note on Inertia & Damping Coefficients in MOSES

    This document explains how the added inertia coefficients and linearized damping coefficients are calculated and reported in MOSES. Often asked questions are also discussed at the end of the document.

    MOSES v10.13 was used in generating results for this work.

    Frequency Domain Analysis and Output Results

    A frequency domain analysis is usually the basis for generating transfer functions (RAOs) for frequency dependent excitation…

    • Mon, Oct 1 2018
  • Introducing SACS 12.0 CONNECT Edition Update

    SACS 12.0 CONNECT Edition Update

    SACS 12.0 CONNECT Edition release enhancements include:

    Collapse Enhancements

    The Collapse program has been enhanced to include the effects of both large rotations and large deflections. As a result, the program is now able to predict very large deformations. The Arc-length Iterative approach has been added to help predict unloading behavior at local and global limit points. An…

    • Wed, Aug 1 2018
  • Introducing SACS 11.3 CONNECT Edition Update

    SACS 11.3 CONNECT Edition release enhancements including:

    Foundation Design for Large Monopile Structures

    • Base shear is the result of skin friction of the pile tip cross section and end moment is the result of the soil compression in one side of the pile due to rotation of pile tip. Base shear effect is significant specially for rigid piles. This effect is significant for gravity type with large diameter pile and may…
    • Wed, Apr 18 2018
  • MOSES Automated Mesh Refinement

    Mesh quality is important because hydrodynamic results quality is dependent on the mesh quality. The automated mesh refinement feature subdivides the panel model for use as the hydrodynamic mesh. It is customary for several mesh densities to be evaluated as part of the hydrodynamic database assessment.  The ability to automatically refine a mesh is intended to allow the user to input a coarse mesh and easily produce refined…

    • Mon, Mar 12 2018
  • Introducing SACS 11.2 CONNECT Edition Update

    Enhancements to SACS Decommissioning tools

    •  Load by Volume Calculation

    The SACS decommissioning tool has been enhanced to calculate the sum of forces and center of forces enclosed in a volume. The volume is user selectable by using the three axes sliders or typing the volume extents.

    • Model Sectioning by Volume

     Using the load by volume tool described above, the selected volume can be used to “cut” a model and create…

    • Tue, Dec 12 2017
  • Introducing SACS 11.1 CONNECT Edition Update

    SACS 11.1 CONNECT Edition Update

    SACS 11.1 update includes the CONNECT Advisor integration in addition to NORSOK 2013 joint strength check in Collapse and pile capacity visualization in Collapse view. The torsional mass moment of inertia calculations have been added to the DYNPAC module, also the ability to handle all load cases generated for a time history has been added to the SACS Wind Turbine Process. Other updates…

    • Wed, Aug 23 2017
  • Introducing SACS 11.0 CONNECT Edition

    The latest SACS 11.0 CONNECT release includes the following major enhancements:

    SACS Precede Decommissioning Tools allows the user to automatically cut the structure at any elevation with weight control for removal purposes.

    The SACS Joint Mesh GUI allows the user to effortlessly add stiffing plates to complex non-tubular joints for finite element analysis meshing purposes with full user control for mesh density…

    • Thu, Apr 27 2017
  • SACS Dialog box - Joint/ Member/Plate Properties/ Translate and Rotate etc windows do not show up in my computer screen when I click on it

    Usually, it is because you have earlier used two monitors, and now that you have switched to one and the dialog box is appearing off the screen. Please reset the dialog box location back to one screen from Precede Settings.  Check 'Reset dialog boxes to default locations' and click 'Apply'. Please see the image below.


    • Wed, Dec 21 2016
  • MOSES 2017 CONNECT Edition updates now available on select

    MOSES 2017 CONNECT Edition updates now available on select


    The Bentley MOSES team is pleased to announce the release of MOSES 2017 CONNECT Edition: 10.01.

    This new version of MOSES (10.01) includes a technology preview of the far field mean wave drift wave method hydrodynamic calculations and a convolution connector.  The convolution connector is intended to be used to model anti-roll tanks. 


    This update also included…

    • Sat, Dec 17 2016
  • Tech Talk: MOSES Loadout Oveview

    Be part of this conversation with Georgina Maldonado, MOSES Product Manager, on taking into account the two assets of importance in the loadout process; the cargo being moved and the vessel being loaded.

    Key Points

    • Separating analysis into cargo supports and ballast arrangement
    • Getting  loads needed to design ballast sequence
    • Input data needed to calculate cargo support stages
    • Input data needed to design ballast sequ…
    • Tue, Sep 27 2016
  • Modeling Semi-Submersibles, Spars, non-ship shaped hull for MOSES

    Modeling semi-submersibles, spars, and other non-ship shaped hulls ready for use in MOSES is still best done in the &SURFACE menu.  There are several examples on how to create these types of hulls at the following directory in your installation drive.

    C:\Program Files\Bentley\Engineering\MOSES CONNECT Edition V10\hdesk\runs\samples\ves_mod

    • Fri, Jun 17 2016
  • Sacs_tow option in the automated tools reports RAOs as G forces, but they should be displacement

    The RAO type is set by the value in column 5 of the RAO line and are defined as Gravitational accelerations (G’s) when the value is ‘G’, and for displacement it should be "D".

    The MOSES output is for displacement, also referred to as motions.  The value in column 5 should be written as "D".

    This will be fixed in the next update.

    • Mon, Jun 13 2016
  • MAXSURF and Rhino

    General purpose 3D NURBS surface modeling programs like Rhino are widely used and complement the ship-specific modeling and analysis capabilities in MAXSURF. We would recommend the following workflow:

    1. Create the initial hull model in MAXSURF Modeler (which has a range of ship-specific modeling and fairing tools and using the other MAXSURF modules to verify stability code compliance and estimate resistance and seakeeping…

    • Tue, Jun 7 2016
  • Battle of Jutland: The Navy’s Bloodiest Day

     HMS Queen Mary explodes during the Battle of Jutland
    wahrscheinlich Deutsches Kriegs-Film- u. Bildamt - Der Weltkrieg 1914-1918 in seiner rauhen Wirklichkeit, München o. J. (um 1925), Public Domain.

    First of all a vivid red flame shot up from her forepart. Then came an explosion forward which was followed by a much heavier explosion amidships... A gigantic cloud of smoke arose, the masts collapsed inwards, the…

    • Sun, May 29 2016
  • On Demand Webinar: Designing with Developable Surfaces in MAXSURF

    Hear from Pat Couser, MAXSURF product Manager, about reducing production costs by designing vessels using developable surfaces.

    Key Points

    • Determining what is a developable surface
    • Approximating developable surfaces in MAXSURF modeler
    • Measuring surface developability using plate expansions in MAXSURF Structure
    • Accurately modeling developable surfaces using MAXSURF Modeler’s surface fitting tools

    View webinar

    • Fri, May 27 2016
  • Webinar: The Block Island Wind Farm Project

    Learn how Keystone Engineering adapted steel jacket foundations used in the oil and gas industry as the design-basis for the wind turbine support structures for the first commercial offshore wind farm in the U.S.

    Hear from Zachary Finucane, Keystone Engineering Project Manager for the Block Island project and Benjamin Foley, General Manager Renewables of Keystone Engineering.

    Key points:

    • Project challenges
    • Lessons from…
    • Thu, Apr 14 2016
  • MOSES 10.00.02 is now available

    MOSES 10.00.02 is now available.  This is an update to the major release containing the integration with Bentley System's new cloud services.  This release contains updates to the LMU and GSPR connector, as well as an update to the structural solver check of section 3.3.4 of RP2A.  This release also contains updates to the GUIs (MOSES Hull Modeler, MOSES Stability, and MOSES Motions).  Please see the read.me file for…

    • Fri, Mar 18 2016
  • Webinar: MOSES Launch – The Quick Course

    Hear from Georgina Maldonado, MOSES Product Manager, and see how to reduce the risk of damage during launch operations using tools enabled for modeling with six degrees of freedom.

    Key Points

    • Quickly create a file set for first launch results review
    • Generate and review standard output
    • Apply MOSES and SACS interoperability for launch analysis

    View Webinar

    • Mon, Mar 14 2016
  • MOSES Solver - setting the license that should be used

    The default SELECT license to be used can now be specified in the .moses.ini file in the user’s home directory (usually c:\users\user.name) using the variable LICENSE and the values AUTOMATIC, STANDARD, ADVANCED or ENTERPRISE. The license suite used for a particular analysis can also be specified in the corresponding *.cif file using the new &DEVICE option –LICENSE command.



    The default setting is read…

    • Mon, Feb 29 2016
  • MAXSURF Modeler: Trimming (cutting) curve and surface selection changes

    MAXSURF Modeler 21, Trimming surfaces and curves selection.

    Information relating to changes in the way in which trimming surfaces and curves selection is now done in MAXSURF Modeler was omitted from the release note / readme.

    For full details please refer to this document

    • Wed, Feb 17 2016
  • Webinar: Improve Offshore Structure Design Quality with SACS CONNECT Edition v10

    Hear from our offshore Product Management team as they discuss the latest engineering enhancements in the SACS CONNECT Edition v10 release.  

    Key Points

    • Design to the latest API standards with new code compliance features
    • Reduce modeling time with improved Joint Meshing utility
    • The Interactive Fatigue module includes new post processing fatigue capabilities
    • New Dynamic Superelement module increases accuracy and streamlines…
    • Thu, Feb 4 2016