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Posts: 5874
| I think what is happening is that you have the Navionics HotMaps. Some of these maps are right on, and some are not. The inaccuracies are a result of several causes. One, they used old data in the conversion. Two, the conversion algorythm is not perfect. Get a map with either, or a combination of the two, and you may be several hundred feet, or even yards, off. This is not a Lowrance problem.
Also, WAAS is still in it's infancy, and all the satellites are not up yet. They need to put more up in the northenr part, as the ones we can see from up north here are low on the horizon. They can be blocked by standing in front of them. Not a big issue, unless you haven't disabled that annoying alarm. Also not a Lowrance peroblem.
Make note of the screen that pops up when you turn on the unit. Not to be used for navigation. My LOTW map is off by a few hundred feet. I mainly use it for general location, and rely on my MNR map.
The X-15 you had last year at Sab Bay had old firmware. It was a unit that had been on the shelf at Gander for some time, and had 1.20 firmware. Should have easily been upgraded to the latest version, but I didn't have my MMC reader, and we couldn't get an internet connection to go do it. I got mine from Thornes. They opened the unit, powered it up, and made sure it shipped with the latest firmware.
If you need help before leaving tomorrow, give me a call, and bring the unit over. I'll get you set up. | |
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