The main point is to figure out how often the GPS should be used (i.e. what is the time that the GPS can be shut down as a function of distance to target, distance to the great circle, navigation path width, boat speed and boat heading (oh man this must be again impossible to understand without a figure)).
The main point is to figure out how often the GPS should be used (i.e. what is the time that the GPS can be shut down as a function of distance to target, distance to the great circle, navigation path width, boat speed and boat heading (oh man this must be again impossible to understand without a figure)).
The maximum time allowed is one hour.
This is a power saving feature.