OpenSeaMap 4.4 - App Store

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About OpenSeaMap

OpenSeaMap is a worldwide Opensource-project for creating a free nautical chart. Founded in 2009 the project gained a lot of attention lately adding more and more nautical information for free. Not even lights and other...

OpenSeaMap is a worldwide Opensource-project for creating a free nautical chart. Founded in 2009 the project gained a lot of attention lately adding more and more nautical information for free. Not even lights and other nautical infos are provided, but also more and more info layers like weather data, information about harbours and so on. As an add on to the OpenStreetMap this provides all missing info for nautical activities. OpenSeaMap is part of OpenStreetMap and uses the same database. FEATURES: - Free worldwide sea chart (incl. HD chart graphics) - Search for geolocations worldwide - Chartplotting with continuous tracking - Waypoints can easily be created, edited, deleted & exported - Mark locations in the chart - Zoom chart optically to fit your preferred reading size - Enter coordinates directly to be displayed in the chart - Offline caching of up to 1 million map tiles - Cleanup of chart cache data at any time To ensure future development and support of the OpenSeaMap app we encourage you to buy the In-App-Product "PRO". This will help keeping new updates and features coming. DISCLAIMER: OpenSeaMap is part of the OpenStreetMap and uses the same database. As an experienced navigator you should NEVER rely your descisions on one source of information alone. Please keep in mind that the OpenSeaMap can not replace official sea charts on bord of your boat. Please use the OpenSeaMap app only in conjunction with official sea charts and conforming to national and international regulations. Please recognize that no depth information is provided by this product. IMPORTANT: The continued use of the GPS can significantly decrease the battery level.

Version History - NEW: Fixed issue on launch of the app - NEW: Updated the user interface to use the latest OS 4.4 Apr 27 - NEW: Show all your waypoints in the map - NEW: Add new waypoints more easily - NEW: Modernised the whole app to run in multi-window environments (on iPad) - NEW: Modernised all icons used 4.2 07/08/2025 - Overall update, bugfixes and improvements 4.1 06/26/2025 - Overall update, bugfixes and improvements 4.0 06/26/2025 This update from Apple will improve the functionality of this app. No new features are included. - Improved information for customers 3.4 05/17/2017 Bugfixes and small improvements. 3.3 05/05/2017 - FIXED: Issues with iOS 10 (i.e. text displayed in map scale view) 3.2 10/27/2016 FIXED: Source for weather data was updated 3.1 08/26/2016 - NEW: Chartplotter (Continuous geotracking) - NEW: Waypoints (create/change/delete/export) - NEW: Enter a coordinate directly - NEW: Improved coordinate display (more precision) - NEW: Search for geolocations completely rewritten/improved - NEW: Settings of the app extended with more options - NEW: Different distance units (meters, miles & nautical miles) - NEW: Updated Design (Icons & Colors) - NEW: App Icon with symbol of a buoy of OpenSeaMap - FIXED: Data sources for weather layers updated - FIXED: Optimizations for iOS 9, iPhone 6, iPhone 6 Plus & iPad Pro - FIXED: Improved usability for iPad 3.0 08/16/2016 - FIXED: Searchinputfield for iPad did not behave correctly occasionally - FIXED: Improved lower toolbar behaviour on rotation and overall display - NEW: Reordered setting switches to better fit importance 2.1.2 11/22/2013 - FIXED: Improvements for iOS 7 - FIXED: Searchbutton stays enabled even after tapping in map now - FIXED: The powered by screen is now deactivated in PRO version - NEW: Colors after switching to PRO are now immediately adjusted - NEW: You can now restore PRO products on other devices with a dedicated button 2.1.1 10/13/2013 - Optimized for iOS 7 2.1 10/03/2013 - NEW: Optimized for iPhone 5 - PRO: Improved coordinatedisplay - PRO: Optical zoom slider - PRO: Weatherlayer (Air Pressure,Temperature,Wind,Waves,Precipitation) - PRO: Nightviewmode - PRO: Improved searching for locations - PRO: Crosshair added for precision 2.0 06/15/2013 - NEW: Support for english language 1.1 02/10/2012 1.0 01/25/2012

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Previous Versions

Here you can find the changelog of OpenSeaMap since it was posted on our website on 2016-09-30 09:30:09. The latest version is 4.4 and it was updated on 2026-06-21 13:48:04. See below the changes in each version.

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Related Apps

Here you can find apps that are similar with OpenSeaMap.

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