GMoor 10.5.2: Professional Mooring Analysis & Design Software

GMoor 10.5.2 is a professional mooring analysis software developed by Global Maritime, a leading engineering consultancy in the offshore and marine industry. This specialized tool is designed for the design, analysis, and optimization of station-keeping systems for floating vessels and offshore structures.

The software is widely used for spread-moored drilling vessels, subsea support vessels, FPSOs, and is currently being adapted for floating offshore wind applications (GMoor Wind) . GMoor is trusted by major oil & gas companies, shipyards, and engineering consultancies worldwide for critical mooring assessments.

GMoor can rapidly produce various iterations of mooring design in a short time frame, saving hours of complex calculations by considering many variables and delivering trusted results . It is fully adaptable to suit project needs and can be purchased as a license for unlimited in-house use.

⚓ Primary Users

This professional mooring analysis software is designed for:

  • Naval Architects & Marine Engineers performing mooring system design and analysis for offshore vessels and floating structures 

  • Offshore & Oil & Gas Engineers analyzing station-keeping systems for drilling vessels, FPSOs, and subsea support vessels 

  • Floating Offshore Wind Specialists designing mooring systems for floating wind turbines (GMoor Wind adaptation) 

  • Marine Operations & Safety Personnel planning mooring configurations for rig moves, positioning, and emergency scenarios 

  • Classification & Regulatory Authorities verifying compliance with API, DNV, and ISO mooring standards 

⚡ Key Features & Capabilities

 

???? Analysis Methods

Frequency Domain Analysis:

  • Quasi-static frequency domain analysis for rapid calculation of line tensions and vessel offsets 

  • Wave-frequency (WF) and low-frequency (LF) motion calculation

  • Efficient batch processing for multiple environmental scenarios 

Time Domain Analysis (Low-Frequency):

  • Transient time domain simulation for studying system response after line failure 

  • Optional wave-frequency effects calculation when nonlinear effects are significant

  • Dynamic response to line breakage and extreme loading events

???? Core Mooring Capabilities

Multi-Component Line Modeling:

  • Complex mooring lines with buoys, clump weights, and distributed buoyancy

  • Catenary and taut-leg mooring systems

  • Multiple line types and configurations

Clearance Calculations (v10.5.1+):

  • Calculate vertical clearances (line passing above/under obstacles)

  • Closest approach in 3D between mooring lines and cylindrical/cuboid infrastructure 

  • Dedicated clearance results tab and annotations on catenary plots

  • Minimum clearance reporting across batch simulations 

Environmental Loading:

  • Wind, wave, and current loading on vessels

  • Wave spectra: PM, JONSWAP, or variable gamma 

  • Wave-frequency damping and mooring-induced damping

???? Advanced Analysis Options

Stansberg Enhanced Method:

  • Extended extreme LF motion prediction beyond the “Stansberg Classic” method 

  • Option for Most Probable Maximum (MPM) or Expected extreme values

  • Code-compliant default selection based on mooring standard

Extra Stiffness & Damping:

  • User-specified additional stiffness (parallel to extra damping) 

  • Customizable dynamic properties for specialized applications

???? Visualization & Reporting

3D Visualization:

  • Field view with colored buoys (yellow) and sinkers (grey) 

  • Catenary plots with mean tension annotations

  • Plan view clearance visualization

Reporting:

  • Built-in CVF (Custom Vessel File) report generation directly from GMoor 

  • Export results to Excel for post-processing 

  • Batch condition processing and database result storage 

???? Code Compliance

GMoor is compatible with major international mooring standards :

  • API (American Petroleum Institute)

  • DNV POSMOOR & DNV OS-E301 (Det Norske Veritas)

  • ISO Mooring Codes