I bought a DVD off e-bay that has all the raster charts plus a copy of Seaclear II. Yes you can download all of that for free off the internet. But it does take a bit of time and effort to download all the charts. The bonus was a PDF instruction manual for seaclear. The writer of the seaclear program provides no instructions and no support so the pdf manual is of some value. Paid about $10. Now I have all that on a disc. I can load seaclear onto the laptop & let it play the charts off the DVD. No connections to the e-bay seller. Ed K