Help. When I bought the boat, it came with a Lawrance Elite 5 chart plotter but no SD card. I contacted the guy I bought it from who said he would look to see if he could find it, but hasn't got back to me. So the question is, can I get a replacement card from somewhere? I assume buying a Navionics Gold card would be useless without the supplied basic card. OR do I just give up and save for a complete new one? Garmin looks good but expensive.

OK just had a message from Lowrance in America. it doesn't come with an sd Card, so where do I buy charts on a card for southern England?