Abstract :
The operational requirements of a harbour control centre are dominated by the problems of radar surveillance. Narrow channels require a large-scale presentation, which leads to multiple displays, and the difficulties which arise in tracking a target from one display to another. The photographic projector display presents numerous advantages in this respect, as well as in preserving a permanent record. Consideration is given to the design requirements of the different units of the system arising specifically in this application, and the procedure by which a system is designed to suit a particular site, and then integrated with the non-radar equipment which is equally necessary for efficient control of traffic in the harbour and its surroundings.
