Originally Posted by Four_winds
Are you telling me that the Hydra 2000 system require another navigation
unit in order to have the full use of it?
Well, sort of. The B&G unit receives and outputs the data from instruments, like your paddle wheel
speed and direction, depth
, flux compass
, etc. It doesn't "navigate" by it self. It will output position and SOG, etc. if it has this data (sentences) from a GPS source. If you are using a PC as a plotter or a stand alone GPS unit, that is where you would load way points, but you do need a separate unit to work with the info the GPS "antenna" is giving you. For example, the Hydra will output distance to a waypoint and ETA to a waypoint, but it needs to know what waypoint that is, which is the active waypoint you are using in the separate GPS unit. So yes, you are not getting full use of the Hydra unit without also having a GPS unit in the system to work with the GPS signal you're getting from the antenna.