Have you took a look on SkipperGuide.com
? There, you can do similar things: Entering descriptions of anchorages
with coordinates and viewing them in Google Earth
(Click on "Browse with Google Earth" just below the world map).
The difference is, that it is based on a wiki and is editable for everyone. It's quite new, so at the moment you will find some placemarks in Greece
, at the Canary Islands, and in Norway
. The vision is to achieve a better coverage of interesting sailing areas and to make it usable for planning sailing trips.