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)
HARBOURS, CURRENT & SAFETY
• Harbour search with map, wind-shelter rating and facilities – save your area offline (Premium)
• Current (set & drift) from NMEA: direction, rate, whether with or against you (Premium)
• On-board barometer with trend and its own storm warning
• GPS integrity: warns of interference from spoofing or jamming (Premium)
• Night-watch alarm (dead-man check) and watch handover logged with one tap
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/
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