SafetyNavigation alerts via app, available across Europe with Sea Alert

Hauke Schmidt

 · 08.07.2026

Sea Alert brings together navigation warnings from most European countries.
Photo: Screenshot Sea Alert
Sea Alert brings together navigation warnings via an app – nautical notices from 21 European countries on an interactive map, with automatic proximity alerts and an offline mode. The app is available for iOS and Android and can be tried free of charge for 14 days. An annual subscription costs 29.99 euros.

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Sea Alert is developed by the Polish company Arkona. The app is aimed at recreational sailors who previously had to manually gather navigation warnings from various sources – ranging from government websites and PDF bulletins to country-specific services. With Sea Alert The app provides navigation warnings: official notices from 21 European countries and NAVAREA zones, consolidated into a single interface, supplemented by proximity alerts and a translation function.

An overview of the features

Its core feature is the interactive map with up-to-date navigation warnings via the app. If the user approaches a reported hazard, Sea Alert automatically sounds the alarm. Warnings can be saved as favourites and shared with the crew. Users can also add their own reports.

Handy for trips abroad: a built-in instant translator that translates navigation warnings directly into German, English, French, Polish or Spanish. This is a particularly useful feature in areas such as the French Atlantic coast or Scandinavian waters, where official announcements are issued in the local language.

Offline mode for poor connections

Sea Alert offers an offline mode for use at sea without a mobile network connection. Anyone wishing to use navigation alerts via the app even outside mobile network coverage should download maps and alerts in advance whilst connected to the internet. You can customise the area, map name and zoom level – the higher the zoom level, the more storage space is required. You can switch between Google Maps and OpenStreetMap with a maritime overlay for the offline map.

Coverage and prices

Sea Alert provides navigation warnings via an app for 21 countries and NAVAREA zones, including Germany, Denmark, Sweden, Norway, Finland, France, Spain, Portugal, Greece and Croatia, as well as NAVAREA zones I, II, III and XIX.

After a 14-day free trial – with no credit card required and no automatic renewal – there are three licence options to choose from. The licences are valid on up to three devices. Further information at www.sea-alert.com


Technical Specifications

PlatformiOS, Android
LanguagesDE, EN, FR, PL, ES
Cover21 countries/NAVAREA zones in Europe
Offline modeYes (maps and warnings can be downloaded)
Max. number of devices per licence3
Automatic renewalNo

Prices:

Trial period0 euros (14 days, no credit card required)
Annual subscription29.99 euros per year (2.49 euros per month)
30-day pass9.99 euros

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Hauke Schmidt

Hauke Schmidt

Test & Technology editor

Hauke Schmidt was born in Hanau, Hesse, in 1974, but moved to the coast at the age of an Opti and grew up sailing dinghies and tall ships. School and semester breaks were used for extensive Baltic Sea cruises. During and after his oceanography studies in Kiel, he took part in various international research trips to tropical and polar regions. The focus was on ocean currents and their influence on climate change. Eventually he was drawn back to his home coast and to YACHT. He completed a traineeship there and has been working as an editor in the Test & Technology department since 2009. His core tasks include equipment and boat testing, as well as practical topics relating to electronics, seamanship and refits. As a passionate DIY enthusiast, he loves to spend his summers on the water with his family and winters working on his boat

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