1. Vedam VEDAM DESIGN & TECHNICAL CONSULTANCY PVT. LTD. 504-506, Acropolis, Military Road, Marol, Andheri (E), Mumbai-59, INDIA + 91-22-67109192, +91-22- 67257237 vedam@vedamindia.com, www.vedamindia.com Design & Technology Center

2. Vedam Challenges in present Station Keeping Mooring Analysis … A glance Mooring Analysis – Usage Mooring Analysis – Stages, Categories Advantage with FUGRO-Vedam collaboration

3. Design & Technology Center Vedam  Complex platform and sub-sea infrastructure  Vessel positioning in close proximity to assets  Stringent safety requirement  Longer mooring durations  Operational requirement: gangway connections, helicopter operations  Vessel response under accidental damage of a line  Support vessel’s movement in close proximity to barge  Unconventional requirements: Connection to Jacket leg, DP buoys etc.. MOORING ANALYSIS IS A TOOL TO SIMULATE COMPLEX NATURE OF STATION KEEPING TO ENSURE SAFETY AND REDUCE RISK DURING OFFSHORE OPERATION

4. Design & Technology Center Vedam

5. Design & Technology Center Vedam Field Survey Anchor Pattern Mooring Analysis CLIENT/MWS

6. Design & Technology Center Vedam

7. Design & Technology Center Vedam  Motion analysis & determining RAO  Modelling of mooring pattern  Quasi-static Mooring Analysis (equilibrium position)  Rule Check as per API/ISO/DNV Standards

8. Design & Technology Center Vedam  Catenary shape & positioning of mooring buoy o Safe vertical distance from sub-sea pipelines o Limiting anchor loads o Chain lengths for DP buoys  One line Damage analysis o Limiting line tensions o Limiting vessel excursions

9. Design & Technology Center Vedam  Transient analysis o Vessel trajectory after breakage of a line o Maximum vessel offsets from platform/assets.  Detailed Report and Anchor Pattern with catenary diagrams,

10. Design & Technology Center Vedam  Derivation of exact catenary shapes  Correct estimation of distance between subsea structure and mooring lines/anchors.  Mooring optimization to meet stringent safety requirement  Stabilisation of vessel motion, excursion  Clash Check  Usage of Damage Prevention Buoys  Derivation of limiting weather  Vessel Relocation Capability

11. Design & Technology Center Vedam  Deployed wire length  Initial tension in the wire  Load on Anchor  Location and size of DP buoys  Load on vessel’s mooring fittings  Safe navigation zone around moored vessel

12. Design & Technology Center Vedam  Limiting Vessel excursion  Distance from pipe lines  Distance from floating bodies  Uneven distribution of spread mooring  Support from Jacket Leg

13. Design & Technology Center Vedam  Effect of different directional weather  Effect of extreme weather condition  Effect of one line damage condition  Limitation to excursion  Factor of Safety of anchor, line & mooring fittings

14. Design & Technology Center Vedam  Limiting vessel roll & pitch motion  Limiting vessel’s heave motion for  Better habitability  Safe operation of gangway, crane etc  Safe platform repair work  Limiting vessel excursion  For position keeping for subsea repair work

15. Design & Technology Center Vedam  Platform to barge safe distance  Anchor to pipe line distance  Across the pipe  Along the pipe  Mooring line to subsea pipe distance  Line to line distance in cross mooring  Distance from platform helideck or flare

16. Design & Technology Center Vedam  DP Buoy parameters for effective lifting of mooring line  Location  Capacity or size  Buoy chain length  Catenary shape with effect of DP buoys  Optimum usage of DP buoys

17. Design & Technology Center Vedam  Analysis with extreme weather condition  Derivation limiting weather condition for safe working condition  Contingency plan beyond limiting weather

18. Design & Technology Center Vedam  Transient Analysis for relocating the vessel  Line tension and catenary for relocation operation  Weather condition for safe relocation operation

19. Marine Consulting | Basic Design | Production Design | Conversion Design | New Building & Repair Supervision | Stability Analysis | Structural FEM Analysis | Mooring Analysis | Shipboard Manuals | Inclining Experiment | Vedam Design & Technology Center VEDAM DESIGN & TECHNICAL CONSULTANCY PVT. LTD. 19 THANK YOU @ VedamDesign @ linkd.in/VedamDes vedam@vedamindia.com