Charts produced by national HOs will adhere to a standard set of chart symbols and colours. That's the real advantage of the Admiralty range - they are the same as the charts available from HOs world-wide, so you can get charts of the same appearance anywhere in the world. Imray charts, while excellent, have two drawbacks - first, they are a second-generation product, as Imray don't do their own survey. Second, they don't adhere to the international standard for the presentation of charts, so if you go to an area not covered by them, you may well have to learn a new set of symbols and colours, which may or may not be intuitive - and switching between them has the potential for misreading one or the other.
I'm lucky enough to have used all sorts. But each occasion with a new style I simply spent some time getting familiarised.
Maybe, but for passage planning there really is nothing to beat a paper chart. Even if you have a 50 inch monitor for your plotter, you cant draw on it in the same way, or stick dividers in it.
"Dividers"? You'll be making on-screen corrections with Tippex next!
I find a plotter ideal for passage planning.
But almost all modern ‘gps’ devices use all the available sat nav systems.
Name them.
Which ones does your GPS use?
If you can't passage plain on a plotter im not sure how you manage with chart .
Where do you sail and which one do you prefer? How accurate is each one? How reliable are their positions?