Originally Posted by barnakiel
I would say there are plenty.
I guess that depends on a definition of plenty
In any case, every island and even every underwater rock in the ocean, that presents hazard to navigation
, is available in the top level S57 charts from NOAA (i.e. in the areas they cover, which include large portions of Pacific ocean). Depending on charting product these would be visible at some of the highest "zoom levels". I can't vouch for areas not covered by NOAA charts - but I would hope that they have comparable level of detail.