The logbook that writes itself.
Auto-logging, watch schedules, weather, and a twice-daily AI brief that emails your family you are okay. One tool for the log, the watch, and the people ashore.
Shore Brief · Day 12
From SV Kestrel · 09 May 2026 · 06:00 UTC
Quiet night. Steady 14 kt easterly, swell 1.8 m. Watch rotation on time. All systems nominal. ETA Papeete 3d 14h.
— next brief 18:00 UTC
Three things. Then it just runs.
No new habits to learn at sea. The log, the brief, and the people who care — connected.
Log a passage
Drop pins, log waypoints, note the watch. Pulls position from your chartplotter, AIS, or phone — or punch it in by hand. Whatever's easiest at 03:00.
WatchKeeper writes the brief
Twice a day, an AI summary stitches your log entries, position, weather, and watch state into a calm, readable update. No drama. No jargon.
Shore crew gets the email
Your partner, parents, kids, dock master — whoever you nominate. Position, ETA, weather, and emergency contacts. They sleep. You sail.
One glance from the nav station.
The dashboard your watch actually uses: position, speed, ETA, and the passage track, logged as you sail and ready to become the next shore brief.
Everything the logbook should have done by now.
Built around how passages actually run — watches, weather windows, gear failures, and the people you left ashore.
Passage logbook
Auto-timestamped entries with position, SOG/COG, wind, sea state, sail plan, and crew on watch. Searchable. Exportable.
AI shore brief
Twice-daily AI-written status email. Plain-English summary, position, weather, ETA, watch status. Tone calibrated for non-sailors.
Ship’s blog — free
A hosted voyage blog at your boat’s own address. Ten designer templates, markdown, five photos a post, position stamped automatically. Free on every plan.
Watch schedule
Rotating, two-up, three-up — set the pattern, WatchKeeper handles the math, prods the next watch, and logs hand-overs.
Weather alongside
Live conditions at your last known position, barometer trend, lightning risk — in the log so every brief is wind-aware.
Float plans & shore safety
Emergency contacts get the full float plan by email before you slip lines; shore crew follow live links while you’re out.
Ship’s papers & visas
Registration, insurance, clearance docs — plus a visa-day countdown per country and AI-researched entry requirements.
Maintenance & systems
Tasks, service log, tools and spares. Know what’s due before it fails, and what’s aboard before you buy it twice.
Stowage & provisioning AI
Every locker mapped, every tin counted. The provisioning AI plans passage meals from what’s actually aboard.
Fish, VHF & DSC logs
The catch, the radio traffic, the DSC alerts — specialty logs that feed the unified ship’s log timeline.
Tanks & consumables
Water, fuel, propane at a glance with slider readings and dashboard totals. No more dipstick guesswork at sea.
Skipper AI
Ask the boat anything — it knows your log, your systems, your passages, and answers like a seasoned delivery skipper.
“The hardest part of a passage isn’t aboard. It’s the people at home, waiting.”
Every photo on this site was shot from SV Cloud Nine
This is what your family wakes up to.
Every twelve hours, while you're on watch or sleeping it off, the AI quietly assembles your latest log entries, position, and forecast into something legible. You approve it from anywhere — or let it auto-send.
- ●TLDR up top — three lines for the kid who only reads the first line.
- ●Position, ETA, weather — the three numbers everyone actually wants.
- ●Emergency block — Coast Guard, EPIRB serial, vessel MMSI, and your insurance line. Always there.
All quiet on the long blue.
- Position
- 17°34′S · 142°08′W
- SOG / COG
- 6.2 kt · 271°T
- Wind
- 14 kt E, swell 1.8 m
- Watch
- 3-on / 3-off, all hands on rotation
- ETA
- Papeete · Tue 12 May, ~14:30 local
USCG Pacific · +1 808 535 3333 · MMSI 367123456 · EPIRB 2DC4A8E…
Insurance: Pantaenius #PT-44219 · Skipper next-of-kin on file.
From the helm
Guides written at sea, not at a desk
Float plans, done right
The one document that tells rescuers where to look, and the free tool that writes it.
Boat GPS trackers, honestly compared
Real 3-year costs, which networks work offshore, and the straight answer on AirTags.
Sailing across the Atlantic
Routes, timing, and what a crossing actually asks of a boat and crew.
Safety equipment that matters
The legal minimums by boat size, and the list that actually saves you.
All ten guides live in the guide library, each with a free tool or checklist attached.
Your voyage, published. No extra cost.
Every boat gets a hosted blog at its own address — write in markdown, add five photos a post, and WatchKeeper stamps your position automatically. Ten designer templates, from a printed journal to phosphor-green telegraphy. Switch anytime; one click shares to Facebook, X, WhatsApp, or email.
Live example: The Cloud Nine Chronicles — mid-Pacific, posting from the boat
Honest pricing. Founder lock-in.
Three tiers across day-sailors to ocean crossers. Beta users get founder pricing for life — the first 100 signups can lock in Bluewater at $199/year, grandfathered forever.
Coastal
Day-sailors and weekend cruisers keeping a tidy log.
Beta users lock in founder pricing for life
- 1 vessel
- Up to 4 crew seats per vessel
- 1 active passage, 3 completed kept
- Basic hourly log + wobble checks + incidents
- Last 30 days of logs (older archived)
- Manual GPX upload
- AI shore briefs 1× daily
- 10 emergency contacts · 1 shore contact
Offshore
Multi-day passages, cruising couples, charter skippers.
14-day free trial · founder pricing in beta
- 2 vessels
- Up to 4 crew seats per vessel
- Full log suite (fuel + engine + VHF + maintenance + drills)
- AI shore briefs 2× daily
- Tracker integration (PredictWind / YB / Garmin MapShare)
- All-time log history
- 10 emergency contacts · unlimited shore contacts
- 14-day free trial
Bluewater
Long passages, crewed boats, offshore racing.
Beta users lock in founder pricing for life
- 5 vessels
- Up to 12 crew seats per vessel
- Celestial log + fish log + full VHF log with DSC
- AI shore briefs 3× daily + on-demand
- SMS alerts to shore crew
- Weather routing (PredictWind full)
- Live AIS nearby traffic
- 25 emergency contacts · unlimited shore contacts
- Read-only public API access
- Priority support
Compare every feature— the full tier-by-tier matrix
| Feature | Coastal Free | Offshore $14/mo | Bluewater $25/mo |
|---|---|---|---|
| Vessel & crew | |||
| Vessels | 1 | 2 | 5 |
| Crew seats per vessel | 4 | 4 | 12 |
| Active passages | 1 | Unlimited | Unlimited |
| Completed passages kept | 3 | Unlimited | Unlimited |
| Log history | 30 days | All-time | All-time |
| Logbook | |||
| Hourly log, positions & incidents | |||
| Manual GPX upload | |||
| Fuel, engine & maintenance logs | |||
| Celestial, fish & full VHF/DSC logs | |||
| Tanks, stowage & ship’s papers | |||
| Ship’s blog | |||
| Hosted blog at /boats/your-boat | |||
| 10 designer templates + markdown | |||
| One-tap social sharing | |||
| Shore crew & safety | |||
| Emergency contacts | 10 | 10 | 25 |
| Shore brief recipients | 1 | Unlimited | Unlimited |
| AI shore briefs | 1× daily | 2× daily | 3× daily |
| Float plan email to contacts | |||
| SMS alerts to shore crew | |||
| Navigation & weather | |||
| Weather panel | |||
| Tracker integration (PredictWind / YB / Garmin) | |||
| Weather routing | |||
| Live AIS nearby traffic | |||
| AI & more | |||
| Provisioning AI | |||
| Skipper AI | |||
| Country entry-requirements research | |||
| Read-only public API | |||
| Priority support | |||
| 14-day free trial | |||
Bluewater for life — $199 / year, grandfathered.
Every Bluewater feature (normally $250/yr) locked at $199/yr for as long as the subscription stays active. Promo closes after 100 redemptions.
Everything we get asked at the dock.
Does this work without satellite internet?
Yes. The log is local-first; entries sync the next time you have any connection — Wi-Fi at the marina, your phone's hotspot, Iridium SBD, or Starlink. The shore brief queues and goes the moment you've got bandwidth.
How is the AI brief actually written?
It reads your last 12 hours of log entries, position, weather, and watch state, then produces a plain-English summary calibrated to be calming rather than dramatic. You can review and edit before it sends, or set it to auto-send.
What do my shore crew receive?
An email — no app install, no login. Position, ETA, conditions, watch status, and an emergency-contact block. Optional: a link to your live passage page with a track and recent log entries.
Can I export my logs?
Always. GPX, KML, and CSV on every tier. Your passages are yours — we don't lock you in. The Bluewater tier adds API access if you want to pipe entries somewhere else.
What chartplotters / instruments work?
Anything that speaks NMEA 0183 / 2000 over Wi-Fi, plus most cellular AIS apps. You can also log entirely by hand. We're testing with Raymarine, B&G, Garmin, and OpenCPN.
When can I actually use it?
Right now. Create a free account, add your boat, and start logging — the Coastal tier is free forever with no card required. Offshore and Bluewater are open too, with a 14-day trial on Offshore.
Start your log book tonight.
Create a free account, add your boat, and log your first entry in under five minutes. Coastal is free forever, no card required. Upgrade to Offshore or Bluewater whenever the passages get longer.
First 100 subscribers: Bluewater for life at founding pricing.