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.
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.
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 for 7 days · Web, iOS & Android
See it run on a real boat.
Three minutes to set up. Years of peace of mind.
Add your vessel
Pick a preset (powerboat, sailboat, fishing) or start blank. Add engine, transmission, electronics — all in one tidy registry.
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.
Stay ahead
Maintenance due dates by hour or date. YTD costs by category. Overdue alerts. Your boat's whole story, in your pocket.
Five taps to log a fuel fill. Three to file a receipt.
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.
Cruisers, sailboats, charters — same captain's log.
Pick a preset, get sensible defaults, then customize categories and fields to suit your vessel.
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."
"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."
"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."
Free for 7 days. Then pay only if it earns its keep.
- ✓Unlimited vessels, parts & entries
- ✓Receipt camera & photo attachments
- ✓Engine-hours tracking & alerts
- ✓Web + iPhone + Android
- ✓Cancel anytime
- ✓Everything in Monthly
- ✓Save ~17% ($59.88 → $50)
- ✓Priority support
- ✓Annual maintenance export
- ✓Cancel anytime
- ✓Everything in Annual — forever
- ✓All future features included
- ✓Founder badge on your profile
- ✓Lock in pricing before launch
- ✓First 100 customers only
Use it on the dock, the helm, or the couch.
Bosun's Mate works in any browser today. Install it to your home screen for a one-tap app icon. Native iOS and Android apps coming to the App Store and Google Play.