Next question - if I run new routes or add waypoints on my 74 sv will the data be saved on the internal hard drive (if it has one) or will it be store to the microSD? If I plug my microSD chip containing my old data into my 74sv, will this data be saved on the 74sv or will it be necessary to keep the chip in the unit so I have that data? In order words does the 74sv have an internal hard drive to store the data? GARMIN HOMEPORT ON BOAT GPS HOW TO Does this data on this Garmin chip load onto the GPS? If yes, what if I'm using Trackback or adding new way points? Where is this data saved (on the Blue chart chip or an internal hard drive)? I'm looking at adding a Gamin BlueCharts (or whatever the maps for my area (South Louisiana bayous). These questions might seem dumb but my plan is to fly home on Friday, pick up the GPS, my son, boat and go fishing. I'm going to try and go fishing on Saturday morning and try this whole thing out.Īnyway - pardon this long rambling email but if you've ever been stuck in a hotel out of town w/o your boat, you know the feeling.Īny comments, suggestions will be appreciated. I'm very familiar with living from hotels, nothing better for thinking about all the stuff you can't do. Nothing you are asking is dumb! I'm a newbie to a lot of this too. Usually the 74sv comes with some sort of base map installed, either BlueChart G2 coastal or LakevVu. If this unit comes with neither that's one reason it's cheaper. I've never started from scratch with a GPS (no base map) but normally the BlueChart G2 maps will remain on a microSD that will have to be plugged in for the GPS to use them. There's usually an installation/update process that you have to go through for the unit to recognize the maps. Once that's done, you can load your waypoints to the 74sv from your microSD that you use with HomePort. I think it stores up to 5000 waypoints and 100 routes internally. As you use the 74sv your tracks, routes and waypoints will be saved on the 74sv internally. You can back them up to your microSD for use in HomePort again as needed. You probably know the 74sv also saves tracks, so if you go exploring the GPS is saving all that for your use later. You see how many times I used the word "usually." That means what I'm telling you is not based on my experience with your exact situation. The Garmin's I have used all cam out of the box with a base map installed. I have done map updates, but in those situations the updated map could only be used when the microSD card was installed. I can't tell you enough how much I like my 74sv.
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