marine gps chart plotters

The limits that are placed on you: 1 sd card and 1 chart -It does not matter how much memory or how many cards you have do not buy any thing more than 32 mb!
So if you use the blue nav software on your boat be sure to pack your computer. If you are going out of the imposed restricted zone placed upon you by "map send" fire up the generator get your computer going and then load the next chart you need. I guess this should not be a problem if you have an ocean liner - boy hope you do not have a smaller boat.
I would be happy with this gps if they let you register let's say 3 additional sd cards or if they did not limit you to one chart what is the point of one chart some one needs to get on the ball at magellan and lift restrictions ASAP!

Thinking it'd be great to get a GPS for your boat/ car/ hiking which will work for all three? Think again. The Magellan GPS MapSend software system makes it virtually impossible to use your GPS for more than one of these categories. Hard to believe, I know, I just got mine in the mail yesterday and I already feel duped. The killer is that the inability to crossover from the BlueNav charts to Topo or Streets is BY DESIGN. There is no software or memory restriction that would keep the unit from being able to use all three MapSend products. Plus... the waypoint managment is poor (can't load from PC to handheld or visa versa without erasing all of the waypoints stored on the receiving device), the file transfer is slow (unless you buy extra technology), the wrist strap screws in to the center of the mount area for external power/ computer communication cable/ external antenna so you always have to unscrew the wrist strap to attach anything else (I mean, come on!). I feel I've spent $500 for a nearly useless product. Avoid Magellan is my advice.

I purchased a Meridian Marine and was disappointed to find that the BlueNav Chart software has serious shortcomings. First you can only download one small chart on one SD card. Chesapeake bay, for example, has 3 different charts so you have to erase the SD card and re-load another map. If you are in a sea kayak it is tough to take a lap top. Also you can't download your track into a PC, which is a problem for sailboats. Your other option is to buy the extra large charts on an SD card which is quite expensive. If you buy this unit with the idea of loading Marine charts you will be seriously disappointed. Buyer beware check it out with Magellan, the website glosses over these shortcomings. The hardware works well if you want to download maps into the unit get an SD card reader it will save you hours of time over a serial connection.