1.
Jie; Chen Dang, Hao
The Second Conference of Global Chinese Scholars on Hydrodynamics, CCSH'2016, 2016.
@conference{Dang2016,
title = {Energy Saving by Using Asymmetric Aftbodies for Merchant Ships – Design Methodology, Numerical Simulation and Validation},
author = {Dang, Jie; Chen, Hao},
url = {http://www.marin.nl/web/Publications/Papers/Energy-Saving-by-Using-Asymmetric-Aftbodies-for-Merchant-Ships-Design-Methodology-Numerical-Simulation-and-Validation.htm },
year = {2016},
date = {2016-11-11},
booktitle = {The Second Conference of Global Chinese Scholars on Hydrodynamics},
publisher = {CCSH'2016},
abstract = {The methodology and procedures are discussed on designing merchant ships to achieve fully-integrated and optimized hull-propulsion systems by using asymmetric aftbodies. Computational Fluid Dynamics (CFD) has been used to evaluate the powering performance through massive calculations with automatic deformation algorisms for the hull forms and the propeller blades. Comparative model tests of the designs to the optimized symmetric hull forms have been carried out to verify the efficiency gain. More than 6% improvement on the propulsive efficiency of an oil tanker has been measured during the model tests. Dedicated sea-trials show good agreement with the predicted performance from the test results.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
The methodology and procedures are discussed on designing merchant ships to achieve fully-integrated and optimized hull-propulsion systems by using asymmetric aftbodies. Computational Fluid Dynamics (CFD) has been used to evaluate the powering performance through massive calculations with automatic deformation algorisms for the hull forms and the propeller blades. Comparative model tests of the designs to the optimized symmetric hull forms have been carried out to verify the efficiency gain. More than 6% improvement on the propulsive efficiency of an oil tanker has been measured during the model tests. Dedicated sea-trials show good agreement with the predicted performance from the test results.
2.
van den Boom, Henk; Hasselaar, Thijs
Ship Speed-Power Performance Assessment Conference
SNAME Annual Meeting, Houston, TX, no. T04, The Society of Naval Architects and Marine Engineers 2014.
@conference{Boom2014,
title = {Ship Speed-Power Performance Assessment},
author = {Henk van den Boom and Thijs Hasselaar},
url = {http://www.marin.nl/web/Publications/Papers/Ship-SpeedPower-Performance-Assessment.htm
http://www.sname.org/},
year = {2014},
date = {2014-10-01},
booktitle = {SNAME Annual Meeting, Houston, TX},
journal = {SNAME Annual Meeting, Houston, TX},
number = {T04},
organization = {The Society of Naval Architects and Marine Engineers},
abstract = {The speed/power characteristics of ships have always been at the core of ship design. To prove contractually agreed values, speed trials are conducted by the yard prior to delivery of the ship to the owner. In the past schedule integrity of the vessel was often the most important factor for the speed requirement. Today, owners and operators are keen to reduce fuel consumption to decrease operational costs. So far a variety of methods for conducting and analyzing speed/power trials have been used by shipyards. With the assistance of the Sea Trial Analysis-Joint Industry Project, ITTC developed guidelines for the execution and analysis of speed/power trials compliant with IMO EEDI. The need to reduce fuel costs and exhaust gas emissions including the upcoming environmental regulations such as EEOI by IMO urge for reliable monitoring of ship performance in service conditions. This requires accurate information of the speed through water. Although the speed log is one of the oldest instruments on board it is not considered the most reliable one. Results of an extensive monitoring campaign on board a 1800 TEU container vessel equipped with six speed logs within SPA-JIP will be presented. The state of art of performance monitoring will be presented.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
The speed/power characteristics of ships have always been at the core of ship design. To prove contractually agreed values, speed trials are conducted by the yard prior to delivery of the ship to the owner. In the past schedule integrity of the vessel was often the most important factor for the speed requirement. Today, owners and operators are keen to reduce fuel consumption to decrease operational costs. So far a variety of methods for conducting and analyzing speed/power trials have been used by shipyards. With the assistance of the Sea Trial Analysis-Joint Industry Project, ITTC developed guidelines for the execution and analysis of speed/power trials compliant with IMO EEDI. The need to reduce fuel costs and exhaust gas emissions including the upcoming environmental regulations such as EEOI by IMO urge for reliable monitoring of ship performance in service conditions. This requires accurate information of the speed through water. Although the speed log is one of the oldest instruments on board it is not considered the most reliable one. Results of an extensive monitoring campaign on board a 1800 TEU container vessel equipped with six speed logs within SPA-JIP will be presented. The state of art of performance monitoring will be presented.
3.
Drummen, Ingo; Koning, Jos
Ensuring design meets operating reality Journal Article
In: MARIN Report, no. 112, pp. 18-19, 2014.
@article{Drummen2014,
title = {Ensuring design meets operating reality},
author = {Ingo Drummen and Jos Koning},
url = {http://www.marin.nl/extra/marin-bladermodules/html/112/#18},
year = {2014},
date = {2014-08-01},
journal = {MARIN Report},
number = {112},
pages = {18-19},
abstract = {Monitoring - Does your ship perform as expected? Is the operating environment as anticipated? Should the next vessel be the same? MARIN helps provide some of the answers.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Monitoring - Does your ship perform as expected? Is the operating environment as anticipated? Should the next vessel be the same? MARIN helps provide some of the answers.
4.
van den Boom, Henk; Huisman, Rene; Mennen, Frits
New Guidelines for Speed/ Power Trials Journal Article
In: SWZ Maritime, pp. 19-22, 2013.
@article{Boom2013,
title = {New Guidelines for Speed/ Power Trials},
author = {Henk van den Boom and Rene Huisman and Frits Mennen },
url = {http://www.marin.nl/web/JIPs-Networks/Public/STA.htm
http://www.staimo.com/},
year = {2013},
date = {2013-01-30},
journal = {SWZ Maritime},
pages = {19-22},
abstract = {The speed/power characteristics of ships have always been at the core of ship design. To prove contractually agreed values, speed trials are conducted by the yard prior to the ship's delivery to the owner. In the past, the vessel's schedule integrity was often the most important factor for the speed requirement. Today, owners and operators are keen to reduce fuel consumption to decrease operational costs. So far, shipyards have used a variety of methods for conducting and analysing speed/power trials. With the assistance of the Sea Trial Analysis-Joint Industry Project (STA-JIP) and ITTC, the new IMO EEDI rules to reduce C02 emissions have resulted in clear, pragmatic and transparent guidelines for the reliable speed/power assessment of ships worldwide. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The speed/power characteristics of ships have always been at the core of ship design. To prove contractually agreed values, speed trials are conducted by the yard prior to the ship's delivery to the owner. In the past, the vessel's schedule integrity was often the most important factor for the speed requirement. Today, owners and operators are keen to reduce fuel consumption to decrease operational costs. So far, shipyards have used a variety of methods for conducting and analysing speed/power trials. With the assistance of the Sea Trial Analysis-Joint Industry Project (STA-JIP) and ITTC, the new IMO EEDI rules to reduce C02 emissions have resulted in clear, pragmatic and transparent guidelines for the reliable speed/power assessment of ships worldwide.
5.
van den Boom, Henk; van der Hout, Ivo; Flikkema, Maarten
Speed-Power Performance of Ships during Trials and in Service Conference
Greek Section 2nd International Symposium on Ship Operations, Management & Economics, SNAME, 2008.
@conference{Boom2018,
title = {Speed-Power Performance of Ships during Trials and in Service},
author = {Henk van den Boom and Ivo van der Hout and Maarten Flikkema},
url = {http://www.marin.nl/web/JIPs-Networks/Public/STA.htm
http://www.sname.org/home
http://www.staimo.com/},
year = {2008},
date = {2008-01-09},
booktitle = {Greek Section 2nd International Symposium on Ship Operations, Management & Economics},
journal = {SNAME 2008},
publisher = {SNAME},
abstract = {Where in the past the operational cost of a ship was dominated by crew costs, this is now taken over by the bunker costs due to the ever increasing oil prices. To reduce operational costs, ships should be optimised in fuel efficiency considering environmental conditions and operational parameters. As a first step the speedpower relation should be established by means of speed trials upon delivery by the yard. A transparent and accurate industry standard for conducting and analysing speed trials is discussed. New methods to determine the added resistance of ships in waves are presented and a consistent practice for speed trials is proposed. The second step in optimizing the vessel performance is to monitor the speed-power performance of the vessel in
service. The vessel however is navigating under continuously changing loading and environmental conditions. By a proper analysis of the results and a display to the crew, the in service fuel consumption can be reduced by e.g. optimum trim of the vessel, engine settings or timely cleaning of the propeller.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Where in the past the operational cost of a ship was dominated by crew costs, this is now taken over by the bunker costs due to the ever increasing oil prices. To reduce operational costs, ships should be optimised in fuel efficiency considering environmental conditions and operational parameters. As a first step the speedpower relation should be established by means of speed trials upon delivery by the yard. A transparent and accurate industry standard for conducting and analysing speed trials is discussed. New methods to determine the added resistance of ships in waves are presented and a consistent practice for speed trials is proposed. The second step in optimizing the vessel performance is to monitor the speed-power performance of the vessel in
service. The vessel however is navigating under continuously changing loading and environmental conditions. By a proper analysis of the results and a display to the crew, the in service fuel consumption can be reduced by e.g. optimum trim of the vessel, engine settings or timely cleaning of the propeller.
service. The vessel however is navigating under continuously changing loading and environmental conditions. By a proper analysis of the results and a display to the crew, the in service fuel consumption can be reduced by e.g. optimum trim of the vessel, engine settings or timely cleaning of the propeller.
2016
Jie; Chen Dang, Hao
The Second Conference of Global Chinese Scholars on Hydrodynamics, CCSH'2016, 2016.
Abstract | Links | BibTeX | Tags: EEDI, efficiency, Energy Saving Device, ESD, Fuel consumption, full scale, measurement, sea trial, ship design
@conference{Dang2016,
title = {Energy Saving by Using Asymmetric Aftbodies for Merchant Ships – Design Methodology, Numerical Simulation and Validation},
author = {Dang, Jie; Chen, Hao},
url = {http://www.marin.nl/web/Publications/Papers/Energy-Saving-by-Using-Asymmetric-Aftbodies-for-Merchant-Ships-Design-Methodology-Numerical-Simulation-and-Validation.htm },
year = {2016},
date = {2016-11-11},
booktitle = {The Second Conference of Global Chinese Scholars on Hydrodynamics},
publisher = {CCSH'2016},
abstract = {The methodology and procedures are discussed on designing merchant ships to achieve fully-integrated and optimized hull-propulsion systems by using asymmetric aftbodies. Computational Fluid Dynamics (CFD) has been used to evaluate the powering performance through massive calculations with automatic deformation algorisms for the hull forms and the propeller blades. Comparative model tests of the designs to the optimized symmetric hull forms have been carried out to verify the efficiency gain. More than 6% improvement on the propulsive efficiency of an oil tanker has been measured during the model tests. Dedicated sea-trials show good agreement with the predicted performance from the test results.},
keywords = {EEDI, efficiency, Energy Saving Device, ESD, Fuel consumption, full scale, measurement, sea trial, ship design},
pubstate = {published},
tppubtype = {conference}
}
The methodology and procedures are discussed on designing merchant ships to achieve fully-integrated and optimized hull-propulsion systems by using asymmetric aftbodies. Computational Fluid Dynamics (CFD) has been used to evaluate the powering performance through massive calculations with automatic deformation algorisms for the hull forms and the propeller blades. Comparative model tests of the designs to the optimized symmetric hull forms have been carried out to verify the efficiency gain. More than 6% improvement on the propulsive efficiency of an oil tanker has been measured during the model tests. Dedicated sea-trials show good agreement with the predicted performance from the test results.
2014
van den Boom, Henk; Hasselaar, Thijs
Ship Speed-Power Performance Assessment Conference
SNAME Annual Meeting, Houston, TX, no. T04, The Society of Naval Architects and Marine Engineers 2014.
Abstract | Links | BibTeX | Tags: EEDI, full scale, measurement, performance, ship, speed-power
@conference{Boom2014,
title = {Ship Speed-Power Performance Assessment},
author = {Henk van den Boom and Thijs Hasselaar},
url = {http://www.marin.nl/web/Publications/Papers/Ship-SpeedPower-Performance-Assessment.htm
http://www.sname.org/},
year = {2014},
date = {2014-10-01},
booktitle = {SNAME Annual Meeting, Houston, TX},
journal = {SNAME Annual Meeting, Houston, TX},
number = {T04},
organization = {The Society of Naval Architects and Marine Engineers},
abstract = {The speed/power characteristics of ships have always been at the core of ship design. To prove contractually agreed values, speed trials are conducted by the yard prior to delivery of the ship to the owner. In the past schedule integrity of the vessel was often the most important factor for the speed requirement. Today, owners and operators are keen to reduce fuel consumption to decrease operational costs. So far a variety of methods for conducting and analyzing speed/power trials have been used by shipyards. With the assistance of the Sea Trial Analysis-Joint Industry Project, ITTC developed guidelines for the execution and analysis of speed/power trials compliant with IMO EEDI. The need to reduce fuel costs and exhaust gas emissions including the upcoming environmental regulations such as EEOI by IMO urge for reliable monitoring of ship performance in service conditions. This requires accurate information of the speed through water. Although the speed log is one of the oldest instruments on board it is not considered the most reliable one. Results of an extensive monitoring campaign on board a 1800 TEU container vessel equipped with six speed logs within SPA-JIP will be presented. The state of art of performance monitoring will be presented.},
keywords = {EEDI, full scale, measurement, performance, ship, speed-power},
pubstate = {published},
tppubtype = {conference}
}
The speed/power characteristics of ships have always been at the core of ship design. To prove contractually agreed values, speed trials are conducted by the yard prior to delivery of the ship to the owner. In the past schedule integrity of the vessel was often the most important factor for the speed requirement. Today, owners and operators are keen to reduce fuel consumption to decrease operational costs. So far a variety of methods for conducting and analyzing speed/power trials have been used by shipyards. With the assistance of the Sea Trial Analysis-Joint Industry Project, ITTC developed guidelines for the execution and analysis of speed/power trials compliant with IMO EEDI. The need to reduce fuel costs and exhaust gas emissions including the upcoming environmental regulations such as EEOI by IMO urge for reliable monitoring of ship performance in service conditions. This requires accurate information of the speed through water. Although the speed log is one of the oldest instruments on board it is not considered the most reliable one. Results of an extensive monitoring campaign on board a 1800 TEU container vessel equipped with six speed logs within SPA-JIP will be presented. The state of art of performance monitoring will be presented.
Drummen, Ingo; Koning, Jos
Ensuring design meets operating reality Journal Article
In: MARIN Report, no. 112, pp. 18-19, 2014.
Abstract | Links | BibTeX | Tags: added resistance in waves, environment, full scale, monitoring, operation
@article{Drummen2014,
title = {Ensuring design meets operating reality},
author = {Ingo Drummen and Jos Koning},
url = {http://www.marin.nl/extra/marin-bladermodules/html/112/#18},
year = {2014},
date = {2014-08-01},
journal = {MARIN Report},
number = {112},
pages = {18-19},
abstract = {Monitoring - Does your ship perform as expected? Is the operating environment as anticipated? Should the next vessel be the same? MARIN helps provide some of the answers.},
keywords = {added resistance in waves, environment, full scale, monitoring, operation},
pubstate = {published},
tppubtype = {article}
}
Monitoring - Does your ship perform as expected? Is the operating environment as anticipated? Should the next vessel be the same? MARIN helps provide some of the answers.
2013
van den Boom, Henk; Huisman, Rene; Mennen, Frits
New Guidelines for Speed/ Power Trials Journal Article
In: SWZ Maritime, pp. 19-22, 2013.
Abstract | Links | BibTeX | Tags: full scale, STA JIP, trial
@article{Boom2013,
title = {New Guidelines for Speed/ Power Trials},
author = {Henk van den Boom and Rene Huisman and Frits Mennen },
url = {http://www.marin.nl/web/JIPs-Networks/Public/STA.htm
http://www.staimo.com/},
year = {2013},
date = {2013-01-30},
journal = {SWZ Maritime},
pages = {19-22},
abstract = {The speed/power characteristics of ships have always been at the core of ship design. To prove contractually agreed values, speed trials are conducted by the yard prior to the ship's delivery to the owner. In the past, the vessel's schedule integrity was often the most important factor for the speed requirement. Today, owners and operators are keen to reduce fuel consumption to decrease operational costs. So far, shipyards have used a variety of methods for conducting and analysing speed/power trials. With the assistance of the Sea Trial Analysis-Joint Industry Project (STA-JIP) and ITTC, the new IMO EEDI rules to reduce C02 emissions have resulted in clear, pragmatic and transparent guidelines for the reliable speed/power assessment of ships worldwide. },
keywords = {full scale, STA JIP, trial},
pubstate = {published},
tppubtype = {article}
}
The speed/power characteristics of ships have always been at the core of ship design. To prove contractually agreed values, speed trials are conducted by the yard prior to the ship's delivery to the owner. In the past, the vessel's schedule integrity was often the most important factor for the speed requirement. Today, owners and operators are keen to reduce fuel consumption to decrease operational costs. So far, shipyards have used a variety of methods for conducting and analysing speed/power trials. With the assistance of the Sea Trial Analysis-Joint Industry Project (STA-JIP) and ITTC, the new IMO EEDI rules to reduce C02 emissions have resulted in clear, pragmatic and transparent guidelines for the reliable speed/power assessment of ships worldwide.
2008
van den Boom, Henk; van der Hout, Ivo; Flikkema, Maarten
Speed-Power Performance of Ships during Trials and in Service Conference
Greek Section 2nd International Symposium on Ship Operations, Management & Economics, SNAME, 2008.
Abstract | Links | BibTeX | Tags: full scale, STA JIP, trial
@conference{Boom2018,
title = {Speed-Power Performance of Ships during Trials and in Service},
author = {Henk van den Boom and Ivo van der Hout and Maarten Flikkema},
url = {http://www.marin.nl/web/JIPs-Networks/Public/STA.htm
http://www.sname.org/home
http://www.staimo.com/},
year = {2008},
date = {2008-01-09},
booktitle = {Greek Section 2nd International Symposium on Ship Operations, Management & Economics},
journal = {SNAME 2008},
publisher = {SNAME},
abstract = {Where in the past the operational cost of a ship was dominated by crew costs, this is now taken over by the bunker costs due to the ever increasing oil prices. To reduce operational costs, ships should be optimised in fuel efficiency considering environmental conditions and operational parameters. As a first step the speedpower relation should be established by means of speed trials upon delivery by the yard. A transparent and accurate industry standard for conducting and analysing speed trials is discussed. New methods to determine the added resistance of ships in waves are presented and a consistent practice for speed trials is proposed. The second step in optimizing the vessel performance is to monitor the speed-power performance of the vessel in
service. The vessel however is navigating under continuously changing loading and environmental conditions. By a proper analysis of the results and a display to the crew, the in service fuel consumption can be reduced by e.g. optimum trim of the vessel, engine settings or timely cleaning of the propeller.},
keywords = {full scale, STA JIP, trial},
pubstate = {published},
tppubtype = {conference}
}
Where in the past the operational cost of a ship was dominated by crew costs, this is now taken over by the bunker costs due to the ever increasing oil prices. To reduce operational costs, ships should be optimised in fuel efficiency considering environmental conditions and operational parameters. As a first step the speedpower relation should be established by means of speed trials upon delivery by the yard. A transparent and accurate industry standard for conducting and analysing speed trials is discussed. New methods to determine the added resistance of ships in waves are presented and a consistent practice for speed trials is proposed. The second step in optimizing the vessel performance is to monitor the speed-power performance of the vessel in
service. The vessel however is navigating under continuously changing loading and environmental conditions. By a proper analysis of the results and a display to the crew, the in service fuel consumption can be reduced by e.g. optimum trim of the vessel, engine settings or timely cleaning of the propeller.
service. The vessel however is navigating under continuously changing loading and environmental conditions. By a proper analysis of the results and a display to the crew, the in service fuel consumption can be reduced by e.g. optimum trim of the vessel, engine settings or timely cleaning of the propeller.