Are Hummingbird and Lowrance GPS, Sonar & Fish Finder usable anywhere in the world or for US use only?
Good question, the sonar should work anywhere in the world so long as you reset it so that it knows you aren’t on the usual lake etc, the gps should work anywhere if you are using the digital compass, obviously different map software will be needed because of the difference in location, garmin memory map is the best for covering most situations, and GPS that is WAAS enabled will allow you to lock onto more satellites giving you more accuracy to the nearest 10-5 meters. Check these out and contact them if you have any problems with software etc http://www.lowrance.com/Products/Marine/ http://www.humminbird.
