BlooSee is the place to share your knowledge related to navigation and the sea (anchorages, marinas, danger spots, tourist information, paradises and dream spots, etc) on a global world chart. It is also a social network for every sea-
lover out there: share photos, comments and stories with other users as passionate about the blue world as yourself.
I have to mention the excellent usability and design of their website. In addition, they have an astonishing application for iPhone under development (I cannot disclose the secret but when published, it is going to reach high ranks).
Good luck Pedro!