General information
Due to the combined action of waves, wind, current as well as mooring, hinge, propulsion and rudder forces ships and offshore structures perform motions in 6 degree of freedom. The precise knowledge of the motion behaviour excited by these forces is crucial for the design, operation and safety of marine structures. Motions, velocities and acceleration define the operability envelopes of structures and operations.
Due to the combined action of waves, wind, current as well as mooring, hinge, propulsion and rudder forces ships and offshore structures perform motions in 6 degree of freedom. The precise knowledge of the motion behaviour excited by these forces is crucial for the design, operation and safety of marine structures. Motions, velocities and acceleration define the operability envelopes of structures and operations.
Services & Activities
The motion behaviour of ships and offshore structure is routinely assessed by model tests in our different facilities and numerical simulations. In our basins sophisticated optical measuring equipment for the accurate motion measurements is available. Calculations with state of the art software solution tailored for different type of structures as e.g. moored platforms, dynamically positioned offshore structures, ships with anti roll tanks or fins stabilizers are offered by MARIN. In addition to numerical and experimental studies, MARIN offers full scale monitoring of platform motions and ship speed and behaviour.
The ships Seakeeping knowledge group investigates the behaviour of ships.
The Offshore Department investigates the behaviour of offshore structures.
The Trials & Monitoring Department is involved in full-scale measurements and monitoring.
The motion behaviour of ships and offshore structure is routinely assessed by model tests in our different facilities and numerical simulations. In our basins sophisticated optical measuring equipment for the accurate motion measurements is available. Calculations with state of the art software solution tailored for different type of structures as e.g. moored platforms, dynamically positioned offshore structures, ships with anti roll tanks or fins stabilizers are offered by MARIN. In addition to numerical and experimental studies, MARIN offers full scale monitoring of platform motions and ship speed and behaviour.
The ships Seakeeping knowledge group investigates the behaviour of ships.
The Offshore Department investigates the behaviour of offshore structures.
The Trials & Monitoring Department is involved in full-scale measurements and monitoring.
Facilities & Tools
Ship & platform motions are evaluated in the following MARIN facilities:
Ship & platform motions are evaluated in the following MARIN facilities:
- Seakeeping & Manoeuvring Basin: seakeeping and manoeuvring tests
- Offshore Basin: offshore tests including waves, wind and current
- Shallow Water Basin: model tests in shallow water (ahead and in astern wave conditions possible)
- High-speed Basin: tests at high froude numbers (ahead and astern wave conditions possible)
Ship & platform motions are calculated with the following tools:
SHIPMO: Motions and seakeeping of ships
FREDYN: Seakeeping and Manoeuvring behaviour of ships in wind and waves
DIFFRAC: 3-D potential theory including wave diffraction
FREDYN: Seakeeping and Manoeuvring behaviour of ships in wind and waves
DIFFRAC: 3-D potential theory including wave diffraction
Experience
Ship & platform motions are evaluated in all Seakeeping and Offshore projects. Varying from the largest container vessels to TLP's and sailing yachts.
Ship & platform motions are evaluated in all Seakeeping and Offshore projects. Varying from the largest container vessels to TLP's and sailing yachts.
Most recent Ship & platform motions papers presented by MARIN:
(complete overview of papers can be found under Publications)
(complete overview of papers can be found under Publications)
Analysis of the Tunnel Immersion for the Busan-Geoje Fixed Link Project Through Scale Model Tests and Computer Simulations
Hans Cozijn (MARIN) and Jin Wook Heo (Daewoo Engineering and Construction, Ltd.), OMAE Conference, Honolulu, 2009
The Effect of Wave Directionality on Low Frequency Motions and Mooring Forces
Olaf Waals (MARIN), OMAE Conference, Honolulu, 2009
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
‘Inverse’ Concept: Wave Energy Generation by Motion and Green Water Maximisation
Bas Buchner and Frederick Jaouen (MARIN), OMAE Conference, Honolulu, 2009
Hans Cozijn (MARIN) and Jin Wook Heo (Daewoo Engineering and Construction, Ltd.), OMAE Conference, Honolulu, 2009
The Effect of Wave Directionality on Low Frequency Motions and Mooring Forces
Olaf Waals (MARIN), OMAE Conference, Honolulu, 2009
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
‘Inverse’ Concept: Wave Energy Generation by Motion and Green Water Maximisation
Bas Buchner and Frederick Jaouen (MARIN), OMAE Conference, Honolulu, 2009
Most recent Ship & platform motions articles written for MARIN Report:
(complete overview of articles can be found under Publications)
(complete overview of articles can be found under Publications)
Pulling together in ROPES JIP
Henk van den Boom, MARIN Report, 2010
MARIN develops unique Underwater Measurement System
Reinier Bergevoet & Edwin van de Bunt, MARIN report, 2009
Tombua Landana transports undergo fatigue assessment
Pieter Aalberts, MARIN Report, 2009
Frigg QP jacket gets 'on the move' at MARIN
Joris van den Berg, MARIN Report, 2009
aNySIMpro: the future of validated multi-body simulations
Olaf Waals, MARIN Report, 2009
Henk van den Boom, MARIN Report, 2010
MARIN develops unique Underwater Measurement System
Reinier Bergevoet & Edwin van de Bunt, MARIN report, 2009
Tombua Landana transports undergo fatigue assessment
Pieter Aalberts, MARIN Report, 2009
Frigg QP jacket gets 'on the move' at MARIN
Joris van den Berg, MARIN Report, 2009
aNySIMpro: the future of validated multi-body simulations
Olaf Waals, MARIN Report, 2009
Contact
For more information on how MARIN can help your organisation with Ship & platform motions, please contact:
For ships: seakeeping knowledge group at seakeeping@marin.nl
For offshore structures: Offshore Department
For full scale measurements: Trials & Monitoring Department
For more information on how MARIN can help your organisation with Ship & platform motions, please contact:
For ships: seakeeping knowledge group at seakeeping@marin.nl
For offshore structures: Offshore Department
For full scale measurements: Trials & Monitoring Department