Abstract
In this paper, a model for implementation of sea passage operational scenarios in the context of simulation-based design of ships is presented. To facilitate the transition towards more energy-efficient shipping, the ability to evaluate and understand ship and ship system behaviour in operational conditions is central. By introducing an optimization model in virtual testing frameworks, operational scenarios can be generated that enhances scenario relevance and testing abilities. The optimization for simulation approach provides speed and course commands based on an optimization framework which factors in the operational considerations and sea state conditions in the area of operation. Impact on the understanding of ship system performance using simulation is assessed in a case study where a sea passage over the North Pacific is replicated for varying operational scenarios and seasons. It is found that the variation of operational scenario, affecting the sea state and speed relation, causes significant differences in required power and fuel consumption estimates. Sea passage control is found to be an important dimension in virtual testing approaches.
Highlights
Energy-efficient shipping is a central topic in maritime research due to fluctuating fuel prices and stricter emission regulations
This paper addresses the generation of relevant operational scenarios in which evaluation of ships and ship systems can be performed using simulation
To facilitate virtual testing of ships and ship systems, this paper presents a virtual captain simulation module for implementation of relevant sea passage scenarios
Summary
Energy-efficient shipping is a central topic in maritime research due to fluctuating fuel prices and stricter emission regulations. New technologies and operational measures have emerged which ship owners, designers and regulatory societies evaluate for application in current and future ships and fleets [1]. The combination of limited track records for new systems, and the risk and cost of open ocean operation and investment cost for new ships and retrofitting, new technology is often met with hesitation and scepticism by ship owners, class societies and regulatory agents. Establishing evaluation methodologies capable of interpreting performance and revealing challenges in operational conditions is a key element in facilitating energy-efficient shipping. This paper addresses the generation of relevant operational scenarios in which evaluation of ships and ship systems can be performed using simulation
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