Sailing logbook on the web, Garmin app now in the store
The logbook that keeps itself.
You enter voyages and legs on the web. Recording with "Cast off" on the watch is now available for Garmin in the Connect IQ Store, other watches and the phone follow soon. Knotlog keeps nautical miles, harbours, crew and photos in one place. The proof for charter companies and licences comes as a PDF.
How it works
Two buttons on board. The rest in harbour.
One press on the Garmin watch, then Knotlog counts nautical miles and notes the weather. Without a watch you enter the voyage on the web, the phone follows soon.
One press in harbour or at anchor, and Knotlog recognises the harbour and closes the leg. Without a watch you add harbours and legs on the web.
Crew, photos, a line of notes. That is the log entry.
No Garmin watch? The web logbook works without one: enter voyages and legs there by hand. Tell me when more watch apps open
On your watch
One glance, one press. This is what it looks like on your wrist.
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Start: "Cast off" with wind and sunset
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Under way: nautical miles, speed and course at a glance
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Moored: one press in harbour closes the leg
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Leg saved, the rest follows on the web
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Night mode: dimmed red-orange, no glare on watch
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Watchface: time, wind, tide, pressure and sun
For charter and licences
Your nautical miles, in black and white.
Charter companies ask for experience, and licences ask for logged miles. Knotlog turns your voyages into a proof: legs, role on board, night hours, grouped by skipper, with a signature line for each skipper.
Knotlog is not a navigation app and does not replace the ship's official log. It fills in what you would otherwise copy by hand.
Knotlog
Mileage proof 2026
Not an official logbook. This proof summarises entries from a private logbook. It does not replace the ship's official log.
| Voyage | Role | nm |
|---|---|---|
| Baltic, Sep 14–19 | Crew | 112 |
| Warnemünde, Aug 2 | Skipper | 21 |
| Dalmatia, Jun 12–19 | Crew | 43 |
| Delivery, May 3 | Skipper | 38 |
Private
Your anchorage stays yours.
- No live position. Nobody sees where your boat is right now.
- Photos without location. Knotlog strips GPS and camera data from every picture on upload.
- Crew names only with consent on the proof. Otherwise it just says "Crew".
- Export and delete at any time, without Premium.
Watches
Watch apps: Garmin is here, the rest is coming soon.
The Garmin app is in the Connect IQ Store. When another app is released, the link will be here.
Prices
The logbook is free. Forever.
Free
forever
- Record and enter voyages, no limit
- Nautical-mile account, harbours, night hours
- Crew, photos, notes
- CSV export and deletion
Premium
€4.99 a month · €39.99 a year · €99 once
- Unlimited PDF proofs, with a signature field for the skipper
- Your track as GPX for your chart software
- Weather review for every voyage: wind, gusts, pressure, sea state
- Analysis over all years
To buy, you sign in or create an account first. You return here afterwards.
Payment runs through Stripe. You can cancel the subscription any time in your account.
Voyage Pass
coming soon
- for a charter week
- 1 PDF proof included
- no subscription
The Garmin app is free. No VAT is charged (small business, § 19 UStG).