Marine Demonstration of Alternative Fuels on the Basis of Propulsion Load Sharing for Sustainable Ship Design

Abstract

As the IMO aims to reduce greenhouse gas emissions from ships by more than 50% by 2050 compared to 2008, the paradigm of the shipbuilding and shipping industries is changing. The use of carbon-free fuels, such as hydrogen and ammonia, is progressing, along with the incorporation of batteries and fuel cells in ships. With the introduction of various propulsion power sources, the application of electric propulsion systems to ships is also expected to accelerate. The verification of reliability and safety is of paramount importance in the development of new technologies designed in response to environmental regulations. However, maritime demonstration is time-consuming and expensive. Therefore, an effective means of demonstrating the performance, reliability, and safety of various marine carbon-neutral technologies with a small burden is required. This study introduces a ship design for marine demonstration, integrating eco-friendly alternative fuels and electric propulsion system components. We further demonstrate a preparation process for the realization of marine carbon neutrality and future ship design through international joint research, standardization, and ship development, which can be linked to manpower training.