The Biggest Worldwide Geodatabase, Made by the Crowd
Nautical charts are expensive, and in many countries data are not always up to date. OpenSeaMap is an alternative solution which is free for anybody to use worldwide. Following the example of Wikipedia, the data are collected by volunteers and are visible on the chart within just a few minutes. OpenSeaMap involves experienced mariners, programmers and thousands of data collectors, all of whom are working to produce a nautical chart with comprehensive, relevant and up-to-date data for water sports which is open to everyone and free of charge.
OpenSeaMap - the free nautical chart - covers oceans and inland waterways worldwide. OpenSeaMap works like Wikipedia, the up-to-date, competent and most comprehensive encyclopaedia in the world. Thousands of skippers, divers, kayakers, and other water-sports enthusiasts compile information they consider important and useful for a nautical chart and save them in a spatial database.
Making use of crowdsourcing, OpenSeaMap is: - Up to date - every change is visible online immediately - Specialised - every user enters data that they consider important - Precise and detailed - continuously optimised by thousands of people - Comprehensive - information for everyone involved in water sports.
OpenSeaMap is the fastest chart in the world. Items such as buoys that have been moved, a new harbour or the harbour master's new telephone number can be found online within just a few minutes, instead of one year later in the next edition of a common harbour pilot book.
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OpenSeaMap