Operational Decision Support and Performance Monitoring

Mandag d. 05. marts 2012

Kl. 16:30 - 19:30




On-board decision support and performance monitoring systems are becoming standard on board many ships and the systems are becoming increasingly sophisticated and widely applicable.  The  first  two  presentations  of  the  evening  will  be  from  developers  of  on-board  systems  who  will introduce  state-of-the-art  decision  support,  performance  monitoring  and  route  planning  systems
and the advanced models behind them.  Secondly a presentation will be given on how to carry out performance monitoring of a large vessel fleet in practise from a shipowner’s point-of-view.  High quality marine weather forecasts are crucial for most on-board systems, and we will be taken behind the scenes of one model used by the Danish Meteorological Institute. Furthermore, weather
routing, performance analysis and the concept of “Virtual Arrival” will be presented. Finally, a presentation will be given from the Technical University of Denmark about the latest re-search in the field of sea state estimation on board a ship.
The presentations of this evening will be in English.

16:30 – 16:40  Introduction to the topics of the evening
Ingrid Marie Vincent Andersen/Ulrik Dam Nielsen, DTU Mechanics, Sec-tion for Coastal, Maritime and Structural Engineering.

16:40 – 17:10  How  onboard  advisory  systems  are used to increase the vessel’s operability and performance
v/ Leon Adegeest, AMARCON Decision Support Systems, Holland

Per today, most offshore operators apply some kind of monitoring system to  ensure  safe  and  efficient  operations  under  the  influence  wind,  waves and  current.  Shipping  companies  use  weather  routing  services  with  a similar purpose: a safe and efficient transit from A to B. By proper integration of the information, much more can be achieved. Using  the  dynamic  characteristics  of  the  vessel  in  combination  with weather forecasts and design limits like for example maximum allowable
accelerations,  roll  motion  or  motions  of  a  crane  tip,  advice  can  be  gen-erated for safe heading, speed and route. 
For ships with a Dynamic Positioning system, the  forces on the DP-sys-tem  can  be  forecasted.  As  a  result,  operational  windows  can  be  gen-erated  in  which  all  the  critical  responses  stay  within  the  limit,  and  at  the same time the vessel can keeps its required position or heading.  The advisory system partly relies on measured data. By continuous mon-itoring of the vessel’s speed, RPM, motions, wave, wind and current, etc, the essential information is collected for performance monitoring and fuel-optimization measures such as optimization of RPM or MCR. The  presentation  will  give  an  overview  of  the  elements  of  an  integrated
advisory system, some practical applications and obtained results.
17:10 – 17:35  Advanced  Propulsion  Modelling  in  Maritime  Decision  Support  Sys-tems
v/ Peter Sinding
, R&D Manager, FORCE Technology
The decision support performed by both performance monitoring systems and voyage planning systems is typically based on fuel optimisation. The propulsion  models  used  for  fuel  consumption  modelling  includes  simple empirical  models,  purely  mathematical  models  and  advanced  physically based propulsion models – each with their own pros and cons. 
In the presentation the concepts of the advanced propulsion model used in  the  SeaSuite  products,  SeaTrend  and  SeaPlanner  are  described  and discussed.  The  benefits of  using  more  detailed  propulsion  modelling  will be highlighted. 
The  presentation  will  also  include  a  preview  of  where  the  propulsion modelling at FORCE Technology is heading.

17:35 - 18:00  Performance Monitoring in practice
v/ Kristian Bendix Nielsen
, Maersk Maritime Technology
Maersk Maritime Technology is responsible for  running the Maersk Ship Performance  System,  which  has  roots  back  to  the  1980's.  Continuously rising  fuel  prices  and  increased  competition  has  significantly  increased the  focus  on  fuel  consumption  and  efficiency.  The  presentation  will  in-clude an introduction to the performance system, together with a descrip-tion of some of the main elements in performance monitoring:
-  Hull and Propeller Performance
-  Main Engine Performance
-  Cylinder Oil Consumption
-  Offservice
The system is also used in connection with Voyage Planning and Execu-tion on board the vessels, as well as providing input to new-building pro-jects. 

18:00 – 18:30  Forfriskning 

18:30 – 18:55  DMI Weather routing
v/ Carsten N. Kofoed
, Head of Maritime Service
Numerical Weather Models: Reliable numerical  weather models are cru-cial  for  planning  safe  and  optimum  offshore  operations  and  for  weather routeing.  This  is  a  short  introduction  to  how  a  numerical  weather  model works.
Strategic weather routeing: Many ocean passages are longer than what is the reliable forecast  range of numerical weather models. Therefore stra-tegic weather routeing provides information for  long-term route planning, which  ensures  safe  and  economical ocean  passages. Decisions  based on  limited  information  shortly  after  departure,  can  turn  out  to  be  very costly.
Performance  analysis  and  Virtual  Arrival:  The  final  part  of  the  presenta-tion will be an introduction to the performance analysis service and Vitual Arrival service provided by DMI - Maritime Service.

18:55 – 19:20  Sea state estimation from an advancing ship
v/ Ulrik Dam Nielsen
, lektor, Danmarks Tekniske Universitet
Onboard sea state estimation is relevant for evaluation of ship operations at  sea.  Applications  are  related  to  both  decision  support  systems  for safety and vessel performance systems. Means to obtain the sea state at fixed  positions  in  the  sea  include  traditional  wave  rider  buoys,  where motion  measurements  of  the  individual  buoy  are  processed  to  give  a (directional) wave spectrum. Similarly, it is possible to obtain estimates of the sea state at the exact position of an advancing vessel by processing measurements of the vessel’s wave-induced responses. The analogy to a wave  rider  buoy  is  clear,  although  the  situation  of  an  advancing  ship  is more complex due to forward speed. This talk outlines the basic approach behind the wave buoy analogy. The difficulties are mentioned and recent  progress is presented in which full-scale data will be considered.

19:20  Afrunding og diskussion


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Mandag d. 05. marts 2012

Kl. 16:30 - 19:30


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