Hull input offsets generated using the vessel’s various Scantling Plans to capture the columns, bracing and underwater hull forms.Using available vessel documents, the following basic input data are generated for the MOSES program: “MOSES” has been utilized to generate vessel hydrostatics, ballasting and stability of a vessel and cargo and generation of standard seakeeping results in irregular Seas. The program accepts a description of a model (vessel) to perform either static, frequency domain or time domain simulations.

MOSES” is an integrated ocean simulation and analysis program for analyzing the ocean performance of systems of bodies. Orcaflex is a marine dynamics program developed by Orcina for static and dynamic analysis of a wide range of offshore systems, including all types of marine risers (rigid and flexible), global analysis, moorings, installation and towed systems. The whole mooring analysis is performed using Moses and Orcaflex 9.2. The mooring analysis focuses on the structural adequacy of the mooring lines, anchor uplift and anchor holding power. This report assesses the behaviour of the Vessel mooring system under extreme weather conditions in the field of interest, along with typical operating conditions. Please correct me if I am wrong and give your valuable suggestions.This analysis is performed to be used for a study of Vessel into a safe mooring system on the Offshore site. How do i reduce computational time? Is it advisable to increase recommended time step? or is there any other way to do this?

Does it demand for longer computational time? it is very small when quasti-static mooring was added (say MoorDyn) earlier.

The computational time is very high when I couple FAST-OrcaFlex. Is it acceptable to give superimposed motion to Displacement RAO's + Harmonic motions and uncheck all of the Included effects except the applied loads where we give a correction factor.? As we are importing the hydrodynamic data file (.out file), the corresponding vessel RAO's are added to the structure. I have one more question regarding superimposed motion. I think I should check the box for Other Damping in OrcaFlex to add additional damping that we give in HydroDyn, Is it not? If so, where do I give additional stiffness in this? One quick question regarding platform additonal stiffness and damping when using FAST-OrcaFlex coupling.

Orcina orcaflex examples