Your boat. Your crew. Every harbour you've shared.
Engine hours, fuel, maintenance, and the cruising log — plus the address book of every boat you've crossed paths with. The logbook that remembers people too.
No credit card to start · Cancel anytime · Lifetime option available
No credit card
End-to-end encrypted
Web · iOS · Android
Built by a captain
⚓ New · Cruiser Contacts
You recognize boats better than people.
Every cruiser knows the feeling — five years later you remember the green-trim sailboat in Princess Louisa, but not the couple's names. Bosun's Mate keeps that memory for you, with the people, pets, and the anchorage you shared.
🚢
Boat-first address book
Log the hull colour and trim before the names. Add the crew, pets, even socials — phone, WhatsApp, Instagram, Facebook — all in one card.
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Pin the encounter
Save the day to your Cruising Log with one tap of your location. Bosun's Mate reverse-geocodes the coordinates to the place name: Princess Louisa, BC.
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The captain's network
When the other boat is also on Bosun's Mate, their public profile attaches automatically. Photo, bio, hailing port — pulled in for you.
No credit card · Free forever plan + 7-day Pro trial · Web, iOS & Android
2-minute tour
See it run on a real boat.
What's new in v1.4
Fresh from the shipyard.
Two features every captain has been asking for — shipped this month.
New
Pin your anchorage — with the place name attached.
Tap once on the map, or use your device's location — Bosun's Mate reverse-geocodes it into a real place name (Princess Louisa, BC · Roche Harbor, WA · Wrangell, AK). Every Cruising Log entry and every Cruiser Contact keeps the moment and the where together, so five years from now you'll still know exactly which cove that was.
Now live
Native iOS + Android apps.
Face ID / Touch ID / Fingerprint sign-in, a real home-screen icon, offline-capable logging, and camera-native receipt capture. Web still works everywhere — every plan syncs across all three.
Pick a preset (powerboat, sailboat, fishing) or start blank. Add engine, transmission, electronics — all in one tidy registry.
02
Log as you go
Snap a receipt with your camera. Note an engine hour. File a fuel fill-up. Every entry is filed under your vessel automatically.
03
Stay ahead
Maintenance due dates by hour or date. YTD costs by category. Overdue alerts. Your boat's whole story, in your pocket.
See it in action
Five taps to log a fuel fill. Three to file a receipt.
Dashboard
Engine hours, YTD costs, upcoming service — at a glance.
Cruising Log
Departure → return, hours underway, distance in nautical miles.
Activity feed
A git-log for your boat — every entry, chronologically.
Maintenance
Photo-attached entries, due dates by hour or date.
Fuel log
Litres or gallons, cost per fill, engine hours at fill.
Swipe horizontally to see more →
Features
Everything a captain logs by hand — done in seconds.
Maintenance schedules
By hours, dates, or seasons. Knows what's overdue.
Fuel & engine hours
Trend lines, MPG, range — quiet bookkeeping for noisy engines.
Cruising Log
Departure → return, hours underway, distance in nm, anchorages and photos. Your seasons, captured.
AI receipt OCR
Snap a receipt — AI fills in vendor, total, date. Multi-photo per entry.
Share with crew — free
Invite your partner, mechanic, or co-captain. Unlimited crew, no extra cost.
Activity feed
A git-log for your boat — see who logged what, when, across every category.
Multi-vessel ready
One captain, several boats. They each have their own log.
Survey & insurance
Renewal dates that don't sneak up on you.
Web + mobile sync
Add a fuel fill-up on the dock, read on the couch.
Custom fields & categories
Make it yours — track hours, PSI, anything that matters to your boat.
Multi-currency
Log costs in USD, CAD, EUR, GBP and 3 more. Your call on the display total.
Built for every vessel
Cruisers, sailboats, charters — same captain's log.
Pick a preset, get sensible defaults, then customize categories and fields to suit your vessel.
Northern Belle · Alaska
Powerboat / Houseboat
Rigging · Sails · Trips
Sailboat
Crew · Fuel · Surveys
Charter / Yacht
From the helm
What captains are saying.
Early feedback from beta captains across North America. Want to add yours? Tell us your story.
"I finally stopped keeping fuel receipts in the chart drawer. My mechanic asked for a service history last spring and I just hit Export PDF."
Beta Captain · 38' Trawler
Vancouver Island, BC
"Cruising Log is genuinely the feature I didn't know I needed. Hours, distance, average speed — all logged with the trip. Better than my paper notebook ever was."
Beta Captain · 44' Sailboat
Annapolis, MD
"Shared access with my wife means she stops hunting for parts numbers when I'm down below. Co-Captain access for free was the dealbreaker for me."
Beta Captain · 32' Centre Console
Lake Champlain, NY
Captain-friendly pricing
Free forever. Go Pro when your boat demands more.
Free
$0forever
✓1 vessel, unlimited entries
✓Maintenance, fuel, costs & cruising log
✓Photos & receipts on any entry
✓7-day Pro trial included at signup
✓Web + iPhone + Android
Monthly
$4.99USD / month
✓Unlimited vessels & co-captains
✓AI receipt scan & survey import
✓Charts & fuel-economy analytics
✓Checklists, custom fields, SMS alerts
✓Cancel anytime
Best value
Annual
$49.99USD / year
✓Everything in Monthly
✓Save ~17% ($59.88 → $49.99)
✓Priority support
✓Annual maintenance export
✓Cancel anytime
Lifetime
$150USD · one-time
✓Everything in Annual — forever
✓All future features included
✓Founder badge on your profile
✓Never pay again
✓Only 150 seats, ever
Multi-currency support (USD, CAD, EUR, GBP, AUD, NZD, MXN) · No credit card to start
Now on iOS + Android
Use it on the dock, the helm, or the couch.
Bosun's Mate is now live on the App Store and Google Play — free plan, no card required. Or keep using it in your browser; every plan works across all three.