Combine draft detector with GPS receiver to monitor barge's loadage

In order to maintain channels and harbors at safe depths, periodic dredging is required. With increasing environmental awareness and tightening legislative control, licenses and approvals are required to dispose of dredged material. For the sake of supervision of loaded barges, this article introduces a Barge's Loadage Monitoring System (BLMS). The applications utilized in Xiamen waterway authority can display various information needed for supervising barges on electronic chart platform visually and comprehensively. The main feature of its innovation is combining draft detector with GPS and on-board transponder technologies.