Manage Your Boat with Confidence
Boat ownership shouldn't be overwhelming. Understand your boat. Stay ahead of maintenance. Save money along the way.
Free account · No credit card required
Maintenance Tracking
Create tasks with due dates or engine-hour intervals, and Marine Keeper handles the rest. Track status across every system on your boat, from zinc replacements to rigging inspections, with automatic reminders before anything falls through the cracks.
- Dual tracking: engine-hour intervals and calendar-based reminders
- Four built-in views: active tasks, history, hours tracker, and seasonal checklists
- Spreadsheet-style manager with priority levels, cost estimates, and status badges
Active Tasks
12
Overdue
2
Upcoming
5
Completed
34
Zinc Anode Replacement
Hull & Keel · Due Apr 12 · Est. $85
Rigging Inspection
Rigging & Sails · Due May 1 · Est. $200
Fuel Filter Change
Engine · Due May 15 · Est. $45
Spring Commissioning
Checklist · Due Mar 20 · Est. —
How engine-hour tracking works
Enter your last service
When did you last change the oil? Replace the impeller? Swap the zincs? Enter what you know and Marine Keeper starts counting from there.
Log your hours
After each trip, log your engine hours. The hour meter on your dash goes up, and so does Marine Keeper, automatically tracking every engine.
Get notified
At 100 hours since the last oil change, you get an alert, not a surprise at the fuel dock. You always know what’s coming up.
Do the work, log it
Change the oil, mark it done, and the clock resets. Next alert fires when the hours are due again. No forgetting, no guessing.
Yanmar 3YM30
Service Manual
48 pages scanned
Suggested Tasks
Change engine oil & filter
Replace fuel filter element
Inspect & adjust valve clearances
Replace zinc anodes on heat exchanger
Replace raw water impeller
Inspect exhaust elbow & gasket
4 of 6 tasks approved
Previous Analyses
Yanmar 3YM30 Service Manual
Diesel Engine · 14 tasks found
Lewmar Windlass Manual
Deck Equipment · 6 tasks found
Your Manual, Decoded
Upload your engine or equipment manual as a PDF or a photo, and our manual analysis tool helps you identify which tasks to track.
- Scans your manufacturer PDF and suggests service intervals for you to review
- Works with any engine or equipment manual: Yanmar, Mercury, Volvo Penta, Lewmar, and more
- One upload replaces hours of reading dense technical documentation
No More Unexpected Costs
Link savings goals to upcoming expenses like new lithium batteries, a standing rigging replacement, or a winter haul-out. Marine Keeper calculates your daily savings target and projects growth with compound interest so you're always ready.
- Savings goals with compound interest projections over any time horizon
- Daily and monthly savings targets calculated automatically
- Daily check-in tracker with streak tracking to build the savings habit
Your Daily Savings Target
$42.50
All goals saved for today
Good
Quick Reminders
Overdue Tasks
2
Upcoming Events
3
A Command Center for Your Boat
Open Marine Keeper and know exactly where things stand. No digging through apps, no checking spreadsheets. Everything that matters about your boat, updated and waiting for you.
- Live weather radar and tide charts powered by Windy and Marea
- Boat Health gauge scoring your boat from 0 to 100
- Overdue tasks, upcoming events, and spending at a glance
143+ Articles. Zero Gatekeeping.
Marine Keeper's built-in reference library covers every system on your boat, from raw water cooling to AC electrical panels to standing rigging. Search by topic or browse ten categories that mirror your boat's actual systems.
- 10 system categories: Engine, Electrical, Plumbing, Hull & Keel, Rigging & Sails, and more
- Searchable library organized the way your boat is actually built
- Categories mirror your Inventory: learn about a system, then track the parts for it
Engine
24 articles
Electrical
18 articles
Hull & Keel
15 articles
Plumbing
12 articles
Rigging & Sails
19 articles
Safety Gear
11 articles
Engine
Raw Water Cooling Systems
Your engine pulls seawater through a strainer, past the impeller, and through the heat exchanger. Understanding this flow helps you spot blockages before they cause overheating.
Everything you need to manage your boat
Eleven integrated tools designed to cover every aspect of boat ownership.
Maintenance
Track tasks by engine hours or calendar dates with automatic reminders
Manual Analyzer
Upload a PDF or photo of a manual and our Manual Analyzer helps you identify which maintenance tasks to track
Financial Planning
Savings goals with compound interest projections up to 10 years
Trip Logs
Log routes, fuel, engine hours, and crew for every voyage
Fleet Management
Detailed vessel profiles with engine tracking and fleet value
Operations Log
Expense tracking with tax deductions and 7 analytics views
Documents
Encrypted storage for manuals, insurance, and registrations
Calendar
Regattas, events, and maintenance in one unified view
Weather & Tides
Live wind, waves, and tide data at your marina
Inventory
Track every part, spare, and component by system
Education
143+ articles organized by your boat's actual systems
Provisioning
Calculate meals and water based on trip length and crew size
Simple, transparent pricing
Personal
Free forever
No credit card required
- 1 boat, 1 engine
- 10 active maintenance tasks
- Engine-hour service auto-schedule
- 10 trip logs / month
- 10 inventory entries / month
- 10 operations log entries / month
- 5 Manual Analyzer reads / month
- 5 receipt scans / month
- 200 MB document storage
- 2 active savings goals
- Education modules & calendar
Starter
Best for casual & seasonal boaters
$79.99/year (save 17%)
- 1 boat, 2 engines
- 30 active maintenance tasks
- Unlimited trip logs, inventory, operations log
- 10 Manual Analyzer reads / month
- 30 receipt scans / month
- 1 GB document storage
- 10 active savings goals
- Provisioning
- Education modules, calendar, expense tracking
Owner
MOST POPULARFrequent boaters, liveaboards, and sailboat + tender owners
$149.99/year (save 17%)
- 2 boats (perfect for sailboat + tender), unlimited engines
- Unlimited active maintenance tasks
- Unlimited trip logs, inventory, operations log
- Unlimited receipt scanning
- 20 Manual Analyzer reads / month
- 5 GB document storage
- Unlimited savings goals
- Data export (CSV)
- Priority support
- Everything in Starter
Frequently asked questions
Everything you need to know about Marine Keeper.
Marine Keeper is a boat management platform that helps you track maintenance, plan finances, manage inventory, log trips, and organize documents in one place.
Create a free account, add your first boat to your fleet, and start exploring the dashboard. We recommend setting up your maintenance schedule and financial goals first.
Create maintenance tasks with due dates or engine hour intervals. As you log trips, engine hours are tracked automatically and trigger reminders when tasks are coming due.
Engine hours are updated each time you log a trip. The system tracks cumulative hours per engine and triggers hour-based maintenance reminders accordingly.
Create savings goals linked to maintenance tasks or future purchases. Set target amounts and dates, and Marine Keeper calculates daily and monthly savings targets with optional compound interest projections.
Yes. Owner covers 2 boats with unlimited engines (perfect for a sailboat + tender). Fleet covers up to 15 boats and Fleet Pro up to 25, with unlimited engines per boat on both. Each boat has its own profile with separate maintenance schedules, engine tracking, and financial goals.
Absolutely. Marine Keeper uses enterprise-grade encryption powered by Supabase. Your data is yours, and we never share it with third parties.
Marine Keeper is currently a web application accessible from any modern browser on desktop, tablet, or mobile. A native app is being considered for future development.
Ready to take control of your boat?
Join boat owners who are replacing anxiety with a system. Create your free account today.
Free account · No credit card required