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Feature 3 | PAINTS AND COATINGS


in the Townsin paper and a detailed analysis of antifouling performance from its own in-house in-house Dataplan data, the fuel consumption increase over a 60 month period for a rosin based system can be calculated as 15%. Looking


forward, International


Paint has stated that it recognises the importance of providing owners with as much information on the performance of its products as it can. Te new relationship with BMT looks to do just that; it will provide the independent monitoring that the partners believe will make both the evidence and methodology cited above ‘incontrovertible.’ The BMT SMARTSERVICES


system,


developed by BMT ARGOSS, will capture and compile real vessel data and independently monitor and report on vessel performance. It will record data automatically from ships’ sensors to monitor engine torque, the speed log, navigational signals (heading and speed over ground), and provide performance information to the crew and to shore-based management for analysis. The system, which can be installed at the newbuilding stage or as a retrofit, automatically records thousands of readings per day, providing ‘unparalleled, accurate’ analysis of vessel performance, according to Brown. Brown said: “Te system will clearly


and transparently measure the in-service performance of our hull coatings, drawing on BMT’s 24/7 in-house MetOcean data. The significance of the fact that MetOcean data is gathered automatically from high resolution, highly accurate satellite monitoring should not be underestimated.” While it is clearly essential to monitor


information onboard, such as the relationship between hull roughness condition and fuel consumption, this information needs to be integrated with the environmental conditions being experienced by the ship. The MetOcean data includes factors


such as wind


speed and direction, currents, (speed and direction) and wave height and direction. The system has been modelled using


weighted performance coefficients to provide the basis for measurement of vessel performance against the


38


International Paint has used various methods for assesing coating performance in the past. Here we see Method 1 of three methods.


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 optimise 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 will be sent to BMT. Te 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. The two partners point out that


accurate monitoring has several benefits for the ship operator. It provides proof of compliance within Charter Agreements and gives owners and operators the ability to determine the energy efficiency of the vessel within the EEOI (Energy Efficiency Operational Index) guidelines. Furthermore,


it allows the vessel, shipping


companies to act immediately on anything adversely affecting the optimum running of


including for


example hull fouling, propeller fouling, trim optimisation and hull damage. Brown added: “In achieving these


benefits, it is essential to be able to show that there is an agreed way of recording standardised data, using an agreed scientific approach that will be generally accepted by the industry. We believe the partnership with BMT will achieve this.” 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. Brown adds, “We want owners to get fuel saving benefits, but want


to make sure that


there is a complete understanding of the actual savings possible rather than just accepting the largest number. From many years of proven in-service performance with data from owners and operators, from Dataplan and from independent testimony, we know exactly what benefits each of our technology types can deliver. This new partnership will make that knowledge completely transparent.” SRCT


Reference 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).


Shiprepair and Conversion Technology 1st Quarter 2012


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