The revised MARPOL Convention addresses emissions from ships under Annex VI, chapter 4, entered into force since 1st January 2013. It set mandatory measures to reduce emissions of greenhouse gases (GHGs) from international shipping, with the Energy Efficiency Design Index (EEDI) made mandatory for new ships, and the Ship Energy Efficiency Management Plan (SEEMP) made a requirement for all ships. The major consumption of energy and burning of fuel onboard is generally required for Ballast water management, Sea water cooling, Cargo operation and Propulsion. Energy efficiency plays the most important role in reduction of energy consumption, fuel consumption and CO2 emissions, accounting for up to 53% of total CO2 emission reductions onboard ship. In pumping applications onboard vessels for sea water cooling systems, the use of proposed Variable Frequency Drives (VFD) control can cut the energy consumption by as much as 60%. Here we have developed a model of adjustable speed drives for controlling high power centrifugal pumps onboard ship for energy conservation and eco-friendly sailing. The results of simulation shows that the proposed method of flow control using VFD not only saves energy but also reduces burning of fuel and also results in a reduction of greenhouse gas emission. Therefore by the use of proposed Green, Smart and Intelligent technology, we can save significant energy and reduce emission of GHG, so as to meet stringent norms as per MARPOL ANNEX-VI, Chapter-4.

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