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On the Development of an Anchor Watch Supporting System for Small Merchant Ships

Yabuki H., Takemoto T., Yamashita K., Saitoh S.

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

2012

Vol. 6, no. 3

331--335

This paper describes the results of a study that aimed at developing an effective anchor watch supporting system to prevent dragging anchor accidents of small domestic merchant ships. The authors performed an experimental study using a training ship in order to investigate the characteristics of the hull movement of a ship lying at single anchor, the cable tension caused by the above movement and etc. Based on the results of the study, the authors propose a standard procedure for safe anchor watch and a new anchor watch supporting system using a PC, a DGPS and an anemometer.

Development of Decision Supporting Tools for Determining Tidal Windows for Deep-drafted Vessels

Eloot K., Vantorre M., Richter J., Verwilligen J.

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

2010

Vol. 4, no. 3

323--330

A decision supporting tool named ProToel for determining tidal windows for deep-drafted ves-sels arriving at or departing from the Belgian harbours, based on both deterministic and probabilistic criteria, has been developed. The program is presently being evaluated as a short-term decision tool by the pilots and waterways authorities for optimising the shipping traffic to the coastal harbour of Zeebrugge. The software can also be applied for long-term considerations, as is illustrated in the case of the port of Antwerp. Some re-flections are made considering the extension of the tool to include other factors that may affect the safety of shipping traffic, such as interaction with banks and with other shipping traffic.