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2 2018

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The impact of LNG carrier transit on fairway capacity

Li M., Mou J., XinSheng Z., Gong S.

Zeszyty Naukowe Akademii Morskiej w Szczecinie

2018

nr 56 (128)

63--70

Liquefied natural gas (LNG), as one of the main sources of clean energy, has witnessed great growth in marine transportation in recent years. Due to the potential catastrophic consequences in case of a vessel traffic accident, the guidelines of the design of an LNG Port and the regulation of traffic management require that a mobile safety zone be set up for the transit of an LNG carrier, that is, a moving safety area around the carrier that excludes other ship traffic. To study the impact of a safety zone on channel capacity, this paper has presented a mathematical model to calculate the impact ratio of a large LNG ship on channel capacity considering different speeds and sailing modes. As a case study, an approach channel to a new LNG port that was developed in Yueqing bay, Zhejiang province, East China, has been analyzed during the concept design of the port with the aim of receiving ships with a capacity of 145,000 m3 . Based on the model, the impact ratio on the whole channel and the segmented channel when a carrier arrives at and leaves the berth has been calculated. The methodology can support the job of port design and vessel traffic management to improve the capacity, efficiency and safety of a waterway.

Logistic conditions of container transportation on the Oder Waterway

Kulczyk J., Tabaczek T.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2018

Vol. 12, no. 1

135--141

The paper contains the analysis of the possibility of container transportation on the Oder Waterway (the Gliwice Canal, the canalized stretch of the Oder River, and the regulated stretch of the Oder River), on the assumption that the waterway complies with conditions of class III European waterway. The analysis is based on the concept of modern motor cargo vessel, adjusted to hydraulic parameters of waterway. The vessel is designed for ballasting when passing under bridges. The amount of ballast water that enables transportation of two tiers of containers is given. The costs of waterborne transportation are compared to the costs of rail transportation of containers on selected shipping routes.