COMING SUMMER 2026

theONEVESSEL COMMAND CENTER

Everything about your vessel. One place. Finally simple.

Offline-first. Built for the moment the signal dies. Works at anchor in the Abacos. Always.

theONE replaces a dozen apps, spreadsheets, and group texts with a single iOS app — telemetry (NMEA 2000 ready), crew, planning, playbooks, and maintenance. Captain-grade, for power vessels 40 feet and up.

Become a Founding Captain See what's inside

iOS & Apple Watch · NMEA 2000 ready · NOAA weather, tides & charts (US coastal)

Most marine apps work until the signal dies.
theONE is built for the moment the signal dies.

Every critical feature was designed to work with zero connectivity — logging, maintenance, stowage, crew access, and the emergency tools you hope you never open. No marina Wi-Fi. No cloud round-trip. No waiting.

Forty miles from the nearest cell tower is a terrible time to discover your boat app needs the internet.
Built for the way captains actually run a vessel

One app. Every system. Every detail.

Jot Inbox

Capture any note or photo on the fly, then route it to maintenance, a vendor, or the observation log when you're back at the table.

Float Plan

File a float plan in under a minute — departure, destination, souls aboard, expected return — sent to dockmasters or shore contacts.

Siri Shortcuts

Eyes on the water. Log an MOB pin, watch change, or logbook entry hands-free via Siri.

Emergency Drawer

One tap for MOB pin (GPS timestamped), USCG contacts, and DSC radio procedure.

Document Vault

Scan, store, and retrieve manuals and certificates — offline.

Trip Planning

NOAA tide data in Today view. Exportable vessel briefing — one-tap PDF for relief captains, owners, and pre-departure review.

Engine Templates

Maintenance templates for the major brands — Volvo Penta, MAN, CAT, Cummins, Yanmar, Onan, Northern Lights, MerCruiser, Seakeeper, Side-Power, and Lewmar.

Built deep. Not just deep-sounding.

The details that matter, wired in.

Apple Watch glances

Underway heading, SOG, depth. Tanks and MOB on the wrist.

Live Activity

Active leg, ETA, and telemetry in the Dynamic Island.

Anchor Watch

Arm at the GPS fix. Drag alert if the boat moves outside your radius.

Boat IT

Wi-Fi passwords, marina codes, gate access. Face ID locked.

Trace

See how today's observation connects to last summer's incident.

Ask

Well over 100 in-app help articles, and growing. One tap from any screen.

Every locker, labeled. Every part, found.

Set it up once. Then search it like a library.

By word, not by memory. Spare impeller, flare kit, guest towels, the good corkscrew. Type it. Find it. Know which locker, which shelf, which bin.

Stow it once.

Tag any item to a locker, shelf, or bin. Photos optional. Works offline.

Find it in seconds.

Plain-word search across every item on the boat. No codes. No categories to memorize.

Crew finds it too.

Guests and crew can look up where things live without calling the captain.

Live telemetry & logging

Your vessel's data — your way.

Log it yourself on a schedule you set, or connect theONE directly to your NMEA 2000 network and let it log automatically at whatever interval you choose. Same data. Same place. Your call on how it gets there.

Manual, on your schedule.

Daily, weekly, every engine hour, every trip. theONE prompts the crew at the right moment. Tap, confirm, done.

Automatic, from NMEA 2000.

Engine hours, fuel burn, depth, temps, voltages, and tank levels at the interval you set — one second to one hour. Offline-first. Syncs when you have signal.

Two ways in, one logbook.

Switch any data point between manual and automatic at any time.

The only marine app that learns your boat

theONE doesn't guess. It remembers — and warns you.

Every issue, observation, maintenance log, and hour reading feeds a causal engine that watches your boat for patterns — and tells you when a pattern that ended badly last time is starting to repeat.

Foresight™

Surfaces patterns in your boat's systems and weights the likelihood of what needs attention next: "this fault chain matches your July 2024 alternator failure."

Hours Watch

Catches the obvious: service intervals, burn-rate anomalies, stale logs.

Departure Windows

Ranks the next 72 hours so you know exactly when to leave.

Every warning is traceable. Tap "why?" and theONE shows you the evidence — the engine hours, the fuel burn, the last three trips, traced to the cause. No black boxes. No magic. Just your boat, finally remembering everything.

When the paperwork lands

One tap. PDF. Done.

Vessel Briefing

A read-only snapshot of your boat's state. For surveyors and relief captains.

Departure Brief

Per-leg pre-departure summary. Tide at ETA, crew aboard, open items.

Trip Summary

Post-cruise summary in one PDF.

Deck Logbook

Official chronological log with watch intervals.

Insurance Export

Maintenance posture, recent service, vendor sign-offs. For use with insurance — not an insurance-approved document.

Owner Week Digest

A weekly one-pager for the owner who isn't aboard.

Truth & visibility

Most marine apps show you dots.
theONE shows you the line between them.

Not just dots.

A maintenance entry isn't a lonely receipt. It sits inside the full run history — hours, conditions, anomalies, observations — so you can see what actually led up to it.

The whole picture.

Every log, every reading, every Jot, every photo — connected to the moment it happened. Nothing floating in isolation.

Truth you can stand behind.

When a surveyor, buyer, or insurer asks what happened, you've got more than a stamp on a page. You've got the run that came before it and the run that came after.

Built the way your brain actually works

Two taps to anywhere. No rabbit holes.

Two taps to anywhere.

Jump from the engine room to the guest list to a vendor invoice without backing out of anything.

Thoughts don't wait.

Mid-task idea? Capture it, act on it, come back. theONE remembers where you were.

No UI to memorize.

Search by word. Tap by intent. The app bends to how you think, not the other way around.

Your boat, your people, the right access

Everyone on the same vessel. Everyone on the same page.

Captains and owners invite the rest of the crew with a tap. Each person gets exactly the access their role needs — nothing more, nothing less. Access works offline.

Owner

Full access. Sets the vessel, invites everyone, owns the data.

Captain

Runs the boat day-to-day. Plans trips, logs runs, manages maintenance.

Manager

Handles schedules, vendors, and paperwork. No helm-side noise.

Mate / Crew

Logs hours, completes checklists, sees the trip plan and weather.

Tech / Mechanic

Read-only on systems plus write access to the jobs they're assigned.

Guest

Trip-scoped view: itinerary, safety brief, where things are. Expires when the trip ends.

Founding Captain access

The first 50 captains.

The first 50 captains get early access to theONE before public launch and a direct line to the team. In return we ask for honest feedback from real trips — including the ones where the signal disappears. Request your spot below.