Monitoring ballast exchange is possible with the application of currently available technology. A monitoring system would consist of sensors to collect data, a programmable logic controller to transfer the data to a personal computer, and a database program to develop the data into a meaningful information. Sensors are currently available which can detect flow through a pipe, detect motor starts, interface with tank level indicators, and detect vessel positions. The hardware needed to collect and process this data is also readily available.The greatest challenge in developing a monitoring system is understanding shipboard ballasting systems and operations. A single vessel can discharge ballast by gravity, through a shell connection, or even through a fire or bilge main. It is the application of understanding these operations to available technology which will produce meaningful information. We will develop a model for this monitoring system. This model will contain diagrams and logic charts which show methods of tracking ballast movement and information processing. Equipment specifications and costs will be provided, as well as databases specifications. Finally, a simple working example of this model will be built to demonstrate that existing technology need only be applied to achieve adequate ballast water exchange monitoring.
