General information
An accurate analysis of the mooring loads is of vital importance for the design of a mooring system. In environmental conditions of combined current, waves and wind moored floaters will show combined low frequency and wave frequency motions. As a result, the mooring loads also contain low frequency and wave frequency components. The variety of different mooring applications is very broad, ranging from spread and turret moored FPSOs to Single Point Mooring systems, jetty moorings and side-by-side mooring.
An accurate analysis of the mooring loads is of vital importance for the design of a mooring system. In environmental conditions of combined current, waves and wind moored floaters will show combined low frequency and wave frequency motions. As a result, the mooring loads also contain low frequency and wave frequency components. The variety of different mooring applications is very broad, ranging from spread and turret moored FPSOs to Single Point Mooring systems, jetty moorings and side-by-side mooring.
Services & Activities
Since the early days of the industry the Offshore Department has been involved in researching mooring loads, both through model tests and simulation tools. Over the years many projects were carried out for FPSOs, Semi-submersibles, CALM Buoys and Spars. Simulation tools have been developed for different mooring applications and different floater types. It is important to note that in many cases a dynamic coupling exists between the mooring loads and vessel motions.
The Trials and Monitoring Department is involved in full-scale measurement of mooring loads.
Since the early days of the industry the Offshore Department has been involved in researching mooring loads, both through model tests and simulation tools. Over the years many projects were carried out for FPSOs, Semi-submersibles, CALM Buoys and Spars. Simulation tools have been developed for different mooring applications and different floater types. It is important to note that in many cases a dynamic coupling exists between the mooring loads and vessel motions.
The Trials and Monitoring Department is involved in full-scale measurement of mooring loads.
Facilities & Tools
Model tests focussed on mooring loads are carried out in the following MARIN facilities :
Model tests focussed on mooring loads are carried out in the following MARIN facilities :
- Offshore Basin: DP model tests in combined current, waves and wind
- Shallow Water Basin
The following tools are used to study mooring loads :
TERMSIM: Assessment of dynamic line and fender loads for moored tankers
DYNFLOAT: Assessment of dynamic mooring system loads and tanker motions
DYNFLOAT: Assessment of dynamic mooring system loads and tanker motions
Software Sales
Some software tools are available for commercial use outside MARIN. A complete overview of these software tools for sale can be found under Software Sales.
Some software tools are available for commercial use outside MARIN. A complete overview of these software tools for sale can be found under Software Sales.
Experience
The list below gives a review of mooring load projects carried out at MARIN:
The list below gives a review of mooring load projects carried out at MARIN:
- Akpo FPSO (TOTAL / Saipem, 2005)
- Erha deepwater CALM buoy large scale model tests (SBM, 2003)
- LPG Side-by-Side Study (FMC Sofec, 2003)
- Shell floating LNG development: side-by-side offloading tests (Shell, 2000)
- Curaçao Cruise Terminal Jetty (Gemeentewerken Rotterdam, 1999)
- Bayu Undan LNG GBS mooring (BHP Petroleum, 1996)
The following Joint Industry Projects (JIPs) were focussed on mooring loads :
- Offloading Operability
- DYNFLOAT
- TERMSIM II
Most recent mooring load papers presented by MARIN
(complete overview of papers can be found under Publications)
(complete overview of papers can be found under Publications)
Viscous Flow Effects Of Passing Ships In Ports
Bunnik, T.H.J. and Toxopeus, S.L., 30th International Conference on Ocean, Offshore and Arctic Engineering (OMAE), Rotterdam, The Netherlands, 2011
On the modeling of passing ship effects
Bunnik, T.H.J. and Toxopeus, S.L., 26th International Workshop on Water Waves and Floating Bodies (IWWWFB), 2011
On the Application of Advanced Wave Analysis in Shallow Water Model Testing (Wave Splitting)
Olaf Waals (MARIN), OMAE Conference, Honolulu, 2009
Motions and Mooring Loads of an LNG-Carrier Moored at a Jetty in a Complex Bathymetry
Otto Weiler (Deltares), Hans Cozijn (MARIN), Bas Wijdeven (Deltares), Stephane Le-Guennec (Total) and Francois Fontaliran (Yemen, OMAE Conference, Honolulu, 2009
Wave Slamming on External Turrets of FPSOs
Bas Buchner and Arjan Voogt (MARIN), OMAE Conference, Honolulu, 2009
Bunnik, T.H.J. and Toxopeus, S.L., 30th International Conference on Ocean, Offshore and Arctic Engineering (OMAE), Rotterdam, The Netherlands, 2011
On the modeling of passing ship effects
Bunnik, T.H.J. and Toxopeus, S.L., 26th International Workshop on Water Waves and Floating Bodies (IWWWFB), 2011
On the Application of Advanced Wave Analysis in Shallow Water Model Testing (Wave Splitting)
Olaf Waals (MARIN), OMAE Conference, Honolulu, 2009
Motions and Mooring Loads of an LNG-Carrier Moored at a Jetty in a Complex Bathymetry
Otto Weiler (Deltares), Hans Cozijn (MARIN), Bas Wijdeven (Deltares), Stephane Le-Guennec (Total) and Francois Fontaliran (Yemen, OMAE Conference, Honolulu, 2009
Wave Slamming on External Turrets of FPSOs
Bas Buchner and Arjan Voogt (MARIN), OMAE Conference, Honolulu, 2009
Most recent mooring load articles written for MARIN Report
(complete overview of articles can be found under Publications)
(complete overview of articles can be found under Publications)
The impact of ships that pass in the night... or in the day
Joop Helder, Willemijn Pauw, Serge Toxopeus, Tim Bunnik, Henk van den Boom and Eric Wictor, MARIN Report, 2011
Pulling together in ROPES JIP
Henk van den Boom, MARIN Report, 2010
Shuttle tool now ready for side-by-side Offloading Operations
Arjan Voogt, MARIN Report, 2009
MARIN contributes to unique Korean motorway project
Hans Cozijn, MARIN Report, 2009
Port of Gijón extension project gets the MARIN touch
Bas Buchner, MARIN Report, 2009
Joop Helder, Willemijn Pauw, Serge Toxopeus, Tim Bunnik, Henk van den Boom and Eric Wictor, MARIN Report, 2011
Pulling together in ROPES JIP
Henk van den Boom, MARIN Report, 2010
Shuttle tool now ready for side-by-side Offloading Operations
Arjan Voogt, MARIN Report, 2009
MARIN contributes to unique Korean motorway project
Hans Cozijn, MARIN Report, 2009
Port of Gijón extension project gets the MARIN touch
Bas Buchner, MARIN Report, 2009
Contact
For more information on how MARIN can help your organisation with mooring loads, please contact :
For model test and simulation activities: Offshore Department
For full scale measurements: Trials and Monitoring Department
For more information on how MARIN can help your organisation with mooring loads, please contact :
For model test and simulation activities: Offshore Department
For full scale measurements: Trials and Monitoring Department