Rubberduck: Sailing Log NMEA

New: inventory & stowage, celestial navigation with a camera sextant. And your log lives on the web: publish to Kielwasser, share your live position with family.

The logbook that writes itself: GPS track, live onboard data, weather and tides – ending in a polished PDF logbook. Built by a sailor, for everything from an evening sail to a long passage.

A LOG THAT THINKS AHEAD • Automatic entries by time, distance or course change – you sail, the app writes • Seamark logging: buoys, lighthouses and beacons you pass are logged automatically • Voyages with legs, skipper, crew and distance in nautical miles • Log reading (nm) and engine hours per passage – start values carried over automatically • Start and stop with a single tap – a clear timeline for every leg

NAVIGATION & ONBOARD DATA • Automatic GPS track recording with distance in NM – protected against GPS outliers • Live NMEA 0183 over Wi-Fi: wind, depth, water temperature, course, speed • Anchor watch with drag alarm – sleep easy at anchor

YOUR SHIP'S LOG ON THE WEB – KIELWASSER • Publish passages to kielwasser.blog with one tap – your own ship's log with interactive chart, ad-free, your data stays yours • Boat profile with photo, optional live position – family and friends sail along from home • Shareable voyage cards for Instagram & Co.

WEATHER & TIDES • 48-hour forecast: wind, gusts, rain, temperature, wave height • Sea-weather warnings from Beaufort 6 • Tidal planner: next high and low water with heights • Area news: official notices for your waters — closures, lock & bridge works, wrecks (NL, DE, DK, SE)

INVENTORY & STOWAGE (NEW) • Know where everything lives: rooms and storage places on the deck plan – below and on deck • Items with photo, best-before status and target stock; safety gear with inspection dates; spare parts with storage place • Procurement list as a printable PDF – never leave port without a spare impeller again • Web editor in your Kielwasser cockpit: maintain everything on your computer, the app syncs • Pair the app with your ship's log via QR code; closure alerts underway

CELESTIAL NAVIGATION (NEW) • Sun line of position & fix as with sextant and almanac — the app computes it all, offline • No sextant? Photograph sun + horizon with the camera and tap them (beta)

ORGANISED ON BOARD • Cash box: expenses, payments and a fair settlement for the crew • Watch schedule: shifts shared automatically across the crew • Ship care: maintenance, repairs and spare parts at a glance • Documents: boat papers and licences always with you • Photos with location and captions right in your logbook

EXPORT & SYNC • Professional PDF logbooks – summary or detailed report with track and photos • iCloud sync: everything automatically on iPhone and iPad

AND MORE • Maps: Apple Maps, OpenStreetMap, Google • 11 languages, optimised for iPhone and iPad • Your data stays private – iCloud only, no third-party server

By the way: the app takes her name from SY rubberduck – the boat she was built aboard, and on which she still sails every single mile.

Try it for free – then continue with an annual subscription or a one-time lifetime purchase.

Fair winds!

Sailing Logbook Premium is available as an annual subscription or a one-time lifetime purchase. Where offered, a free trial begins when you subscribe; afterwards your Apple ID account is charged. The subscription renews automatically for the same period unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple ID account settings. Any unused portion of a free trial is forfeited when you purchase a subscription. Privacy Policy: https://kielwasser.blog/privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/