In the last years, global warming and climate change concerns led the United Nations - and thus IMO about shipping - to set ever-higher goals in order to reduce polluting emissions. Many researchers focused their efforts on ship operational efficiency by proposing different approaches to weather routing problems. Following this research stream, the authors developed an innovative approach to ship voyage optimization based on 3D dynamic programming. Fuel oil consumption rate is considered as the objective function to minimize, while the expected time of arrival (ETA) and ship motions are taken into account as constraints. In this paper, a systematic comparison between the results of the voyage optimisation and the real ship data, over a period of three months, is presented. The voyage optimisation method has been applied to ro/ro-pax ferries engaged in Mediterranean routes. Ship operational data have been collected thanks to ship operators. Ship speed, course and fuel consumption have been compared to detect similarities, differences and relationships between optimal suggested routes and the real decisions taken by captains on board.
SHIP VOYAGE OPTIMISATION: A COMPARISON BETWEEN FORECAST AND REAL ROUTE SELECTION
Massimo Figari;Raphael Zaccone;Michele Martelli
2019-01-01
Abstract
In the last years, global warming and climate change concerns led the United Nations - and thus IMO about shipping - to set ever-higher goals in order to reduce polluting emissions. Many researchers focused their efforts on ship operational efficiency by proposing different approaches to weather routing problems. Following this research stream, the authors developed an innovative approach to ship voyage optimization based on 3D dynamic programming. Fuel oil consumption rate is considered as the objective function to minimize, while the expected time of arrival (ETA) and ship motions are taken into account as constraints. In this paper, a systematic comparison between the results of the voyage optimisation and the real ship data, over a period of three months, is presented. The voyage optimisation method has been applied to ro/ro-pax ferries engaged in Mediterranean routes. Ship operational data have been collected thanks to ship operators. Ship speed, course and fuel consumption have been compared to detect similarities, differences and relationships between optimal suggested routes and the real decisions taken by captains on board.
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