| Summary: | 碩士 === 國立高雄科技大學 === 運籌管理系 === 107 === This study investigated the ships’ emissions of CO2, SO2 and particulate matter (PM) when reducing speed and setting sulfur emission control area (SECA) from the distance of 20 nautical mile when entering the Port of Kaohsiung. We assessed the costs and benefits of the Kaohsiung Port and operators in the condition of government subsidy policies, which were 2018 Vessel Speed Reduction Program and fuel transfer program. The results of study were divided into three parts, which were fuel consumption of vessels, emissions from ships, and costs and benefits of the Kaohsiung Port and operators.
Speed reduction can diminish the fuel consumption of main engine, and increase the fuel consumption of auxiliary engine. If we consider both the fuel consumption of main and auxiliary engine, the main engine’s fuel consumption reduction is more than auxiliary engine’s fuel consumption increase. The larger the ships are, the more fuel consumption reduction of main and auxiliary engine is.
Ship emissions changed with fuel consumption.When ships reduced speed and fuel trasferred, the results indicated that ships emissions of CO2, SO2 and PM decreased by 37%, 82% and 78% respectively.
Reducing speed and fuel transfer reduced 15,000 tons of CO2, 350 tons of SO2, and 45 tons of PM at Kaohsiung Port. As to the operators, benefits actually existed when the ship reduced speed and transferred fuel. The monetary benefits of reduced CO2 emissions would exceed the costs of Kaohsiung Port when the carbon price was up to 64 dollars. And the costs of fuel transfer were higher than the monetary benefits of reduced SO2 and PM emissions significantly. The Port of Kaohsiung pays more than other countries. Thus, if the government wants to give incentive so that container ship operators would like to reduce ships' speed and transfer fuel, the government should take more discreet assessment about the subsidy amount.
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