Keyword: Sustainability


Maritime in the 21st century: 2000-2030 The state of play, a brief history, a roadmap, and scenarios focusing on the Baltic Sea and Ro-Ro shipping

Spaniol, Matt; Steger-Jensen, Kenn; Lützen, Marie; Rytter, Niels Gorm Maly; Ziukas, Andrius; Lappalainen, Otto; Ehlers, Valdemar; Karvonen, Taipo

The report is organized as follows. The introduction will lay out the current state-of-play of eco-efficiency and the zeitgeist of the current situation on maritime that we find ourselves in, in 2020. The next section will provide some historical context looking back to 2010 and 2000 to trace the trajectory and developmental course on which we are. The core contribution of this report is the Maritime Operations Roadmap that can be found in Figure 1 on page 9. This illustration plots the expectations for technological capabilities and policy from 2020 to 2030.

Ecoprodigi Report / 2020
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A genetic algorithm-based grey-box model for ship fuel consumption prediction towards sustainable shipping

Yang, Liqian; Chen, Gang; Rytter, Niels Gorm Malý; Zhao, Jinlou; Yang, Dong

In order to enhance sustainability in maritime shipping, shipping companies spend good efforts in improving the operational energy efficiency of existing ships. Accurate fuel consumption prediction model is a prerequisite of such operational improvements. Existing grey-box models (GBMs) are found with significant performance potential for ship fuel consumption prediction, although having a limitation of separating weather directions. Aiming to overcome this limitation, we propose a novel genetic algorithm-based GBM (GA-based GBM), where ship fuel consumption is modelled in a procedure based on basic principles of ship propulsion and the unknown parameters in this model are estimated with a GA-based procedure. Real ship operation data from a crude oil tanker over a 7-year sailing period are used to demonstrate the accuracy and reliability of the proposed model. To highlight the contribution of this work, we compare the proposed model against the latest GBM. The results show that the fitting performance of the proposed model is remarkably better, especially for oblique weather directions. The proposed model can be employed as a basis of ship energy efficiency management programs to reduce fuel consumption and greenhouse gas (GHG) emissions of a ship. This is beneficial to achieve the goal of sustainable shipping.

S.I.: OR for Sustainability in Supply Chain Management / 2019
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