Coatings World - June 2012

and wave height and direction.

The system has been modeled using weighted performance coefficients to provide the basis for measurement of vessel performance against the condition of the propeller, hull, engine and fuel consumption. In depth analysis can be used to monitor the propulsive performance of a ship and to indicate how much additional power, or fuel, would be required as a consequence of the combined effects of weather and fouling or of the isolated effects of fouling on the hull or propeller. This analysis enables data trending, which can be used to optimize any scheduling of hull and propeller cleaning events and can be subsequently used to quantify the effectiveness of any such events.

To ensure complete data integrity, all information collected is sent to BMT. The client and International Paint will be able to view vessel data in graphical or tabular form to develop trend analysis via a secure access web interface but the data cannot be changed or manipulated.

rather than just accepting the largest number. It is from many years of proven in-service performance with data from owner/operators, from Dataplan and from independent testimony that they say they know exactly what benefits each of their technology types can deliver. They believe that this new partnership will make that knowledge completely transparent. CW

Text and graphics provided courtesy of International Paint.

References

1. Townsin et al paper entitled, “Fuel economy due to improvements in ship hull surface condition 1976-1986”, ( Maritime Technical Information Facility, last modified July 27, 1994).

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Wider benefits

Accurate monitoring has several benefits for the ship operator:

1.Proof of compliance to Charter Agreements.

2. Ability to determine the energy efficiency of the vessel within the EEOI (Energy Efficiency Operational Index) encompassed in the SEEMP (Ship Energy Efficiency Management Plan) guidelines.

3. The ability to act immediately on anything adversely affecting the optimum running of the vessel e.g. hull fouling, propeller fouling, trim optimization, hull damage etc.

In achieving these benefits, it is essential to be able to show that there is an agreed way of recording standardized data, using an agreed scientific approach that will be generally accepted by the industry.

International Paint and BMT say they want to provide shipowners and operators with information in a completely open and transparent way to provide clarity to those using the information. They want owners to get fuel saving benefits, but want to make sure that there is a complete understanding of the actual savings possible

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