source for charts in image format ?

[PascalG]

i'm trying to find marine charts in image format to overlay in Google earth... can't find any on the web. tried the various free noaa online chart sites, including marine planner, maptech, nauticalchart.gov, etc... plenty of online viewer but no full chart.

takes too long to save the online view then overlay each of them in google, i'd like to do it chart by chart

any idea ?

being able to overlay charts in google earth is neat for plannig purpose as you can adjust the transparency of the overlay...