In recent years, a number of tankers have run into FPSOs' during offloading cycle due to human error even with utilization of other positioning systems that are currently available. Collision with an FPSO during this cycle is very costly and can put the FPSO out of operation for several months. For instance, a collision in the North Sea on October 8th 2009 caused the FPSO to be out of production at the end of Jan 2010. In order to avoid berthing accidents, we propose a warning system that is separately deployed to provide early collision warning. The system detailed in this paper, assists the berthing process whether human watch person is present or not and is independent of any other system deployed.

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