Cast off with confidence
Your next weekend on the water starts with a logbook that's already done.
Free to start, no credit card, no spreadsheets. Put MarDat on watch for your boat today.
Built for recreational boat owners
Know your boat is ready, every time you cast off.
MarDat tracks every maintenance job, scores your boat's condition, and reminds you before small jobs turn into ruined weekends. One clear logbook, from dock to deep water.
Free to startNo credit cardEarly access for boat owners
Three jobs MarDat keeps for you. Plus a logbook that remembers the rest.
No app to babysit. Tell MarDat about your boat once, and it runs the schedule, watches the condition, and speaks up before anything's overdue.
- TRK
Maintenance task tracking
Every job for every system, engine, hull, electrical, safety gear, in one list. MarDat builds the schedule from your boat so nothing slips.
- HLT
Boat health & condition reports
A live picture of your boat's condition. An at-a-glance score, wear tracked over time, and clean reports for insurance, surveys, or resale.
- RMD
Reminders that reach you in time
Seasonal, hours-based, and calendar reminders nudge you before the deadline. Fix the impeller this week, not next haul-out.
- LOG
One logbook, fully yours
Parts, costs, photos, and service history live together. Purpose-built for boats, not a spreadsheet bent into shape.
Three steps, dock to done
Set it up once. Sail with a clear head all season.
- 01 Plot
Add your boat
Make, model, engine hours. MarDat charts a maintenance schedule tailored to your vessel in seconds.
- 02 Track
Log as you go
Check off jobs, snap photos, record parts and costs. Your condition score updates with every entry.
- 03 Relax
Get nudged in time
MarDat watches the calendar and the hours so you don't have to. Show up to the dock ready, every time.
Peace of mind Know nothing critical is overdue before you cast off.
Money saved Catch small issues early, skip the expensive surprises.
Resale protected A complete service history is worth real money at sale.
Answers before you cast off.
Straight answers to what owners ask us most. Still unsure? The crew reads every email.
- Free to startNo credit card during early access.
- Built by boat ownersMade by people who maintain their own boats.
- Cookieless by designNo tracking, no spam, no urgency.
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What does MarDat cost?
Free to start during early access, with no credit card. We're still finalising paid plans, so early users get in before any of that arrives.
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Will it work for my boat?
If it's a recreational boat, yes. MarDat fits power and sail, from trailerable runabouts to mid-size cruisers. Tell it your make, model, and engine hours, and it charts a schedule around your vessel.
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Do I need to be handy to use it?
No. MarDat builds the schedule from your boat's details and tells you what's due and when. You check jobs off; it watches the calendar and the hours. Already keep your own records? You can log those straight in too.
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How do reminders reach me?
By season, by engine hours, and by calendar date, ahead of the deadline rather than after it. Fix the impeller this week, not at next haul-out.
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Are you tracking me on this site?
No ads, no analytics, nothing cross-site. The only on-device storage is strictly necessary to sign you in and keep you signed in; if you use Google sign-in, Google may set its own. Because it is all strictly necessary, there is no consent banner. See our Cookie and Privacy policies. Read the privacy policy.