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Operational Decision Support and Performance Monitoring

Skibsteknisk Selskab (Foreningen til Søfartens Fremme samt Søfartsteknisk Forening) i samarbejde med Maritimt Selskab (Ingeniørforeningen - IDA)

Mandag den 5. marts 2012, kl. 16:30 - 19:30
Sted: Ingeniørhuset, Kalvebod Brygge 31-33, arrangements nr. 125075

Operational Decision Support and Performance Monitoring

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 were all 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
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.

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17:10 – 17:35     Advanced Propulsion Modelling in Maritime Decision Support Systems
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.

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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 include
an introduction to the performance system, together with a description
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 Execution
on board the vessels, as well as providing input to new-building projects.

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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 crucial
for planning safe and optimum offshore operations and for weather
routeing. This is a short introduction to how a numerical weather model
Strategic weather routeing: Many ocean passages are longer than what is
the reliable forecast range of numerical weather models. Therefore strategic
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
Performance analysis and Virtual Arrival: The final part of the presentation
will be an introduction to the performance analysis service and Vitual
Arrival service provided by DMI - Maritime Service.

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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.

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19:20                    Afrunding og diskussion

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