Ship Traffic Organization with Moving Havens: Ship and Shore Perspective
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e-Navigation is a concept launched by the IMO in 2006. The point is to share digital data to the benefit of safety, efficiency and the environment. Every ship must make a voyage plan before leaving berth. Sharing such voyage plans between ships and between ships and shore is called route exchange and such a feature would allow alarms to be triggered both onboard and ashore if a ship deviate from its planned route, or if two ships plan to be at the same place at the same time. To visualise correspondence or lack of correspondence between the planed position and the real position the concept of Moving Havens is suggested. It is a visualisation tool designed to intuitively show if a ship falls out of its safety checked position. In case of route exchange and Ship Traffic Management it will facilitate for land-based operators or automation to distinguish dangerous situations. The concept is presented in this paper. The same method is suggested as a tool to increased awareness and safety in the context of a future mixed environment of Maritime Autonomous Surface Ships (MASS) and traditional manned ships.