The boat-share problems we've already solved
Every recurring marina-night argument, with a fix
Group text to check if the boat is available this weekend
Shared calendar with instant booking — see availability at a glance
Nobody remembers to log engine hours after a trip
Simple post-trip logging with automatic hour tracking
Marina fees and fuel bills split unevenly or forgotten
Automated expense splitting based on usage or equal shares
Winterization deadline missed because nobody took ownership
Seasonal maintenance reminders with assigned responsibilities
Arguments over who gets the boat on holidays
Fair rotation scheduling for peak dates and holidays
No central place for insurance docs and marina contracts
Document storage for policies, contracts, and manuals
Built for Your Workflow
Every feature designed for how you actually share
Booking & marina ops
Coordinate docking, booking, and slip management with a shared calendar your whole group can access.
- Real-time booking calendar
- Slip and mooring management
- Peak season fair rotation
- Multi-day trip support
Engine Hour Tracking
Log engine hours after every outing to stay on top of maintenance intervals and usage-based costs.
- Post-trip hour logging
- Maintenance interval alerts
- Usage history per partner
- Service schedule tracking
Cost Splitting
Split fuel, marina fees, insurance, and maintenance costs automatically — no more awkward conversations.
- Usage-based cost allocation
- Marina fee tracking
- Insurance premium splitting
- Seasonal cost management
Haul-out and winterization
Plan winterization, commissioning, haul-outs, and bottom paint with timely reminders and task assignments.
- Winterization checklists
- Commissioning reminders
- Haul-out scheduling
- Maintenance task assignments
How It Works
Up and running in 2 minutes
Set Up Your Share
Create your boat share group, add vessel details, and invite co-owners in minutes.
Book Your Time
Reserve your days on the water. Fair rotation rules handle peak dates automatically.
Log & Split
After each trip, log engine hours and expenses. Kai splits costs fairly among partners.
Maintain Together
Seasonal reminders and maintenance tracking keep your vessel in top condition year-round.
Your season, at a glance
Boats live on a calendar, not a year. Kai maps the whole season for your group — so commissioning, peak weeks, and haul-out never sneak up.
Spring commissioning
Recommissioning checklist with assigned tasks, splash date, and a sea-trial booking the whole group can see.
Peak-season rotation
July, August, holiday weekends — fair rotation rules handle the dates everyone wants, in advance.
Mid-season service
Engine hours, oil changes, zinc swaps and bottom checks tracked against intervals, not memory.
Haul-out and storage
Yard date, cradle, shrink-wrap, and storage cost split — coordinated in one place instead of three group chats.
Off-season tasks
Winter projects, electronics upgrades, and warranty work distributed and tracked across the partners.
One source of truth, year over year
Last year's haul-out costs, what the surveyor flagged, who handled what — all there next April.