The Antares charts might allow Shard's return to Loch Teacups without embarrassment
As they are a raster format it looks as though they will be useable with OpenCPN (may require some tweaking though - CPEDW, you are surely our man for trying this out?)
The Memory Map software sounds like a remarkably good deal - a complete UK chartplotter for £95. I have sent an enquiry to them re. OpenCPN, AIS input and chart updates and will publish the results here when I get them.
As those of you who read our blog of this Summer's cruise know, we relied extensively on OpenCPN running CM93 charts once we ran out of paper chartage North of Bergen. In fact, we found the electronic charts invaluable even when we did have paper - all Norwegian pilots recommend having the largest scale charts you can and using a magnifying glass . . .
We used OpenCPN in preference to the CMAP software because it allows for AIS input from our NASA AIS engine, but we have also found it to be a more reliable platform. We ran it on an EEE-PC netbook running Windows XP with a 20GB solid state drive. The SSD means it is slightly more rugged than a machine with a whirly HD, plus it is quicker to boot into Windows and uses less power. With a car adapter you can run this wee machine for hours with no huge power drain, especially if you have it set to go to sleep between forays into the chart. (The EEE-PC has a 12V input, aso no step-up required - but beware cheap car adapters, the one we got from Ebay the day we left caused serious interference on the VHF).
Here's a pic of the netbook strapped under the sprayhood in chartplotter mode. Main downside was that the screen was hard to read in sunlight - but that wasn't too much of a problem on our trip ................................................................................eeepc under the sprayhood on Fairwinds