Abstract
Ningbo Zhoushan port handled 1.08 billion tons cargoes in 2018 which is considered as the one of biggest ports in the world. There are more than 1 000 ships enter or depart the port per day. Therefore, it is of importance to assess the collision risk for ships passing through the harbor area. In this article, a novel approach is initially proposed to assess ship collision risk in the harbor area based on collision detection technology of ship domain using automatic identified system (AIS) data. This study aims to build a unified framework of collision risk assessment which does not need to build different models in accordance with the ship domain we selected. To clean the historical motion data of ships, a method for anomaly detection of ship static information based on autoencoder (AE) is proposed. Based on the above proposed method, the ship collision frequency can be estimated, besides, the risk area can also be determined. The results obtained from the method could provide a reference on furthering enhance the navigational safety for the Maritime and Port Authority.
Highlights
The Ningbo Zhoushan port is one of the biggest ports all over the world, it transforms 1.08 billion tons of cargoes in 2018
This study provided the unified framework for calculating the collision frequency based on any ship domain
For detecting the static anomaly information of automatic identified system (AIS) data, the anomaly detection method based on autoencoder was proposed
Summary
The Ningbo Zhoushan port is one of the biggest ports all over the world, it transforms 1.08 billion tons of cargoes in 2018. The traffic density of the ship is high, where more than 1 000 ships pass through the port area daily. It is not wide enough for passing through due to it lies in the Zhoushan archipelago. With the increase in the volume of goods, traffic density is expected to increase continually. It is obvious the high traffic density would result in more accidents occurrence. The traffic separation scheme (TSS) can assure the navigation safety in the archipelago, the Maritime and Port Authority is still not known about the risk in the waters area precisely. Risk assessment can qualify to evaluate the collision risk and help the policymakers making effective strategies decision
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