Designing Future Ships for Significantly Lower Energy Consumption

Abstract

The likelihood of both increases in, and volatility of, the cost of conventional fuel in the coming decades combined with more stringent emission regulations, means that ships in the future will have to be significantly more efficient and make use of alternative sources of energy. Considering the regulatory aspect, it has been claimed that, if the IMO were to reduce international shipping’s carbon dioxide emissions to those consistent with limiting anthropogenic climate change to 2 degrees of warming, then ships in 2050 would have to reduce their carbon dioxide emissions by 75-90% compared to ships in 2012. To investigate what might be the appropriate mix of technologies and operational approaches for future ship designs the “Whole Ship Model” (WSM) was developed, which is a holistic ship design tool, primarily developed at UCL, that can generate many ship design options with different design, technology and fuel combinations. The Whole Ship model can be used to explore different arrangements and uses of energy efficiency measures on container ships, bulk carriers and tankers evaluating their performance over an operating profile. This paper will initially present some results from the Whole Ship Model, evaluating the potential performance of present-day ships and technologies and will then compare this to technically feasible future ship designs that use contemporary or near-term technology to achieve very high reductions in carbon dioxide emissions and energy consumption

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