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CMap or Navionics Vector Charts for Furuno Time Zero?

Old 10-06-2014, 03:36 PM
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Default CMap or Navionics Vector Charts for Furuno Time Zero?

I need to purchase new charts for my new Furuno TZ Black Box. I have previously had Cmap NT charts but wondering if there is any difference at all between Cmap Maxsea and Navionics Maxsea? Would like to see the same screen shot of a chart from both manufacturers to compare.
Old 10-06-2014, 11:32 PM
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Originally Posted by cabo32x View Post
I need to purchase new charts for my new Furuno TZ Black Box. I have previously had Cmap NT charts but wondering if there is any difference at all between Cmap Maxsea and Navionics Maxsea? Would like to see the same screen shot of a chart from both manufacturers to compare.
At least in the US, the MM3D versions of the Navionics and C-Map vector charts are very, very similar in terms of the actual data provided. That is not surprising since they are both derived from the same US government S-57 vector charts, which are supplied free over here with the Furuno plotters. In fact, they offer very little benefit over the free charts.

I have to assume that in Australia, the Hydrographic Office vector charts are the common database for both the Navionics and C-Map charts. These are then converted to the MapMedia format for the Furuno TZ. The differences are thus almost entirely cosmetic. I think you will get a very good idea of those cosmetic differences from the online catalogues of Navionics and C-Map without struggling to find a direct slice the same area. If you were comfortable with the C-Map NT vector charts you used previously, you may as well stick with them.

Both companies claim to add various proprietary data to the charts beyond the government databases. I am deeply skeptical that there is much of substance involved, however. The problem is exacerbated for the MM3D format because there is very little demand for them and they are not updated as regularly as the other formats by Navionics or C-Map.
Old 10-07-2014, 11:51 PM
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cabo32x,
what area do you want to see? I have both and the differences can be significant depending on the area.
EG: Port Phillip Bay - very little difference
Southern NSW offshore - Navionics MM3D has many more contour lines
I can try and get screenshots once I know the area you are interested in.

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