Draft SRA/RA Systems Design Manual for Restricted Waterways.

This manual has been written to support aid to navigation system design and maintenance functions performed at the District Office. In Section 1, the procedure presented applies the findings of the project to the specific problem of assigning priorities for the maintenance of individual aids when resources are limited. In Section 2, the procedure presented relates channel or harbor conditions to the aid to navigation systems needed to provide adequate performance. In Section 3, instructions and piloting performance data are provided for design methods which seek to 'manage' the risk of accidents. A second approach described is to design AN systems while considering the cost tradeoff between providing an aid to navigation system versus the value of the increased safety. A series of data collection efforts were conducted on shiphandling simulators and at sea specifically to derive design data for use in this manual. There were five visual simulator efforts, three radio aid simulator efforts, and two at-sea data collections. The draft manual is highly annotated with reference to these efforts.