Chartplotter screen really usefull?
Hi all,I went through the comparison of handheld GPS chart units (wanted something that I can carry in my pocket) and found that the handheld Garmin, Magellan, etc. screens are too small to be useful for charts. The larger color units, I imagine, are somewhat better, but I didn't want to spend the $$ or carry around such a large unit. Also, the Charts are very expensive and you get locked into the charts for your unit type. Also, I already had a color PDA and found software to display charts on both my PC and PDA, and can connect both to the GPS unit for positional data and to upload/download waypoints, routes, and tracks from/to the GPS.Here is what I found most useful. Purchased a Garmin eTrex Marinier (West Marine Exclusive) that contains a database of aids to navigation for US waters. These are shown graphically on the display when in "map" mode.For electronic charts, I purchased Memory-Map (see www.memory-map.com) for my PC and hand held PDA (HP Jornada). It provides the capability to display charts, define waypoints and routes, etc. on your computer, then download to your GPS for use in the field. The user interface is very convenient for defining routes and waypoints. You can download all your charts, waypoint, routes etc. to the PDA, too for a very portable system. Memory Map supports different sources of Maps, both topographical and nautical, and you can even scan in your own if you want.I found that SoftCharts from Marineplanner.com offer a great value to get the charts for regions I use. You buy a subscription (about $5 per area) and can update all your charts from the Internet as many times as you want for a year. I purchased the 10 pack for about $50 and have downloaded, so far, four charts that cover my sailing territory around Boston. They provide notice to mariner updates on their web site, too.I also use Microsoft Maps and Streets and it supports download of maps to the PDA for use on the road, and it too will track your position on the map if connected to a GPS.Both Memory Map and Maps and streets allow you to print out charts. For nautical use, you should have a good chart (NOAA or equiv.) as backup in case your electronics go out. It is a good idea to print out your route legs for reference, too.I plan my trips on the computer at home and download the routes to the GPS. The GPS provides the navigational info to direct me over the course. The PDA provides the means to change or add routes while away from the computer and you can use it as a chart-plotter display, if desired, but batteries tend to drain quickly while connected this way (can connect to an on-board DC power source).Fair winds,Tom