Raster charts for UK on a MFD plotter

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trythallj

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I am intending to fit a fixed chartplotter with radar and ais input, and would like to use raster charts. From information I can find, it looks as though most of the major chartplotter brands are able to use only vector charts. (I believe Raymarine plotters can use Lighthouse raster charts, but I don't think these are available for the UK.)

Am I correct in this? If not, I would much appreciate any advice.
 
I too would like to have Raster Charts on a chartplotter. Presently using Navionics Vector on the plotter but have Memory Map Raster on the iPads, iPhone and Hudl2.
Raymarine do Raster but not for the UK although Fance is covered.
Click here and also click on Chart Store
Got a feeling that we won't get Raster for the UK but will prob buy Raymarine plotter when I upgrade present one "just in case".
 
Why do you want raster charts? On a relatively small screen, there are some advantages with vector charts, such as the ability to de-clutter, turn off layers, etc.

Latest C-Map 4D has some raster capability in addition to vector, I believe.
 
Thanks Foeu, very much confirms my thinking.

Why raster pvb? Haven't had much experience of using them, but quite a bit with vector, and found quite a few errors in positions of eg drying rocks, which I guess happen at some stage in the production of the vector chart layers. I have seen rocks jump 100m or so when changing zoom settings! Also lots of little crosses on my track alarmed me on a dark night off Hirta, until I checked on paper, and each corresponded to an R on the seabed in 120m. Hence the closer something looks to a paper chart, the happier I am. These were with C Map charts.
 
NV Charts do vector charts for chartplotters, but not for the UK yet. They are apparently releasing their chart packs (paper plus digital for PC, Android and iOS) in February, though, so maybe the same charts for chartplotters will be released shortly thereafter.
 
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trythallj said:
Why raster pvb? Haven't had much experience of using them, but quite a bit with vector, and found quite a few errors in positions of eg drying rocks, which I guess happen at some stage in the production of the vector chart layers. I have seen rocks jump 100m or so when changing zoom settings!
Click to expand...

I wonder what you'd see if you compared coordinates of a rock on different scale paper charts? It's quite likely there'd be differences in position. Marine cartography isn't a very exact science in many parts of the world, and vector charts in the main reflect the underlying paper charts.
 
pvb said:
I wonder what you'd see if you compared coordinates of a rock on different scale paper charts? It's quite likely there'd be differences in position. Marine cartography isn't a very exact science in many parts of the world, and vector charts in the main reflect the underlying paper charts.
Click to expand...

The rock wouldn't be in a different position but the precision with which you could measure it's position would be less. This would have the effect of you measuring the rock in different positions on charts of different scale, certainly, but it is not about error in the way the data is collected so much as the increasing uncertainty in measuring the position of small things on successively smaller scales.
 
I was thinking of getting a set raster electronic charts from Find My Harbour and use them on laptop or Android Tablet
Generally as a backup
Rich
 
trythallj said:
Thanks Foeu, very much confirms my thinking.

Why raster pvb? Haven't had much experience of using them, but quite a bit with vector, and found quite a few errors in positions of eg drying rocks, which I guess happen at some stage in the production of the vector chart layers. I have seen rocks jump 100m or so when changing zoom settings! Also lots of little crosses on my track alarmed me on a dark night off Hirta, until I checked on paper, and each corresponded to an R on the seabed in 120m. Hence the closer something looks to a paper chart, the happier I am. These were with C Map charts.
Click to expand...

I have also found lots of these little crosses, signifying rocks with less than 2m, on Navionics charts, as you say where the BA chart has an "R". An area between Ardnamurchan and Coll was rife with them. I reported it to Navionics, and eventually got an upgraded and updated chart. I have subsequently found lots of other instances, but haven't done anything about them. It shows great carelessness or ignorance on the part of the cartographers, and could lead to some dangerous assumptions.
 
NormanS said:
I have also found lots of these little crosses, signifying rocks with less than 2m, on Navionics charts, as you say where the BA chart has an "R". An area between Ardnamurchan and Coll was rife with them. I reported it to Navionics, and eventually got an upgraded and updated chart. I have subsequently found lots of other instances, but haven't done anything about them. It shows great carelessness or ignorance on the part of the cartographers, and could lead to some dangerous assumptions.
Click to expand...

I have raster charts on my Standard horizon GPS chart CP300I chart plotter..
 
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