theONE replaces a dozen apps, spreadsheets, and group texts with a single iOS app. Captain-grade, for power vessels 40 feet and up — and offline-first, so all of it works when the signal dies.
Jump to: Running the boat · Routes & chartplotter · Telemetry · Foresight · Stowage · Watch & glances · Exports · The record · Crew roles
Capture any note or photo on the fly — the weird noise, the low reading, the thing the mate spotted — then route it to maintenance, a vendor, or the observation log when you're back at the table. Nothing gets lost between the deck and the desk.
File a float plan in under a minute: departure, destination, souls aboard, expected return. Send it to dockmasters or shore contacts so someone always knows where you are and when to worry.
NOAA tide data right in the Today view, and an exportable vessel briefing — a one-tap PDF for relief captains, owners, and pre-departure review.
One tap for a GPS-timestamped MOB pin, USCG contacts, and DSC radio procedure. Built to be used with cold hands and no time — and it works with zero signal.
Eyes stay on the water. Log an MOB pin, a watch change, or a logbook entry hands-free via Siri.
Scan, store, and retrieve manuals, certificates, and registrations — offline. The owner's manual for the genset is aboard even when the internet isn't.
Maintenance templates for the major brands — Volvo Penta, MAN, CAT, Cummins, Yanmar, Onan, Northern Lights, MerCruiser, Seakeeper, Side-Power, and Lewmar — so service schedules start right instead of starting blank.
Wi-Fi passwords, marina codes, gate access — the small keys that run a modern boat, Face ID locked and one search away.
The grounding, the contact with the piling, the crew slip on a wet swim platform. Recorded once, with the crew who were aboard, where it happened, and what was done — then closed with a typed outcome and the name of whoever verified the fix. The record you want to already have when the insurer calls.
The conversation about a thing lives on the thing. Notes to the mate, a reply from the yard, what you agreed on the phone — posted on the observation, the incident or the vendor's own record, instead of scrolling back through a group text to find what someone said in April.
Well over 100 in-app help articles, and growing. One tap from any screen, no manual required.
Build the passage leg by leg — origin, destination, and the marks you actually round in between. Then take it with you: theONE writes a standard GPX route file your chartplotter already knows how to read.
A cruise is a chain of hops, and theONE plans it that way — each leg with its own ETD, ETA, tide at arrival, costs, notes and voice memos. Start one, end one, and the next is ready.
Type "Thomas Point Shoal Light" and theONE resolves it to a position, then draws the whole route on the chart with distance and time to run.
Save the route as GPX and load it on Garmin, Simrad, Lowrance, B&G, Raymarine or Furuno by card or companion app. No proprietary format, no subscription, no re-typing waypoints at the helm.
And when a place name is ambiguous — and on the water they often are — theONE checks the position it got back against the leg you are actually sailing. A mark that could not plausibly be on that hop is left unplaced rather than guessed at. A route file goes into a real chartplotter and gets steered; we would rather hand you a waypoint short than a waypoint wrong.
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 logbook. Your call on how it gets there.
Daily, weekly, every engine hour, every trip. theONE prompts the crew at the right moment. Tap, confirm, done.
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.
Switch any data point between manual and automatic at any time. The history stays continuous either way.
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.
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."
Catches the obvious: service intervals coming due, burn-rate anomalies, logs going stale.
Ranks the next 72 hours so you know exactly when to leave.
Every warning is traceable. Tap "why?" and theONE shows 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.
Spare impeller, flare kit, guest towels, the good corkscrew. Type it. Find it. Know which locker, which shelf, which bin — by word, not by memory.
Tag any item to a locker, shelf, or bin. Photos optional. Works offline.
Plain-word search across every item on the boat. No codes. No categories to memorize.
Guests and crew can look up where things live without calling the captain.
Underway heading, SOG, and depth. Tanks and MOB on the wrist, so the essentials never require reaching for a phone.
Active leg, ETA, and telemetry in the Dynamic Island — visible mid-passage without unlocking anything.
Arm it at the GPS fix. If the boat moves outside your radius, you get the drag alert — not the morning surprise.
See how today's observation connects to last summer's incident. Every entry sits in its full history, not in isolation.
Six exports, each built for the person who'll actually read it.
A read-only snapshot of your boat's state. For surveyors and relief captains.
Per-leg pre-departure summary. Tide at ETA, crew aboard, open items.
The whole cruise in one PDF, ready the moment the lines are made fast.
Official chronological log with watch intervals.
Maintenance posture, recent service, vendor sign-offs. Formatted for use with insurance — not an insurance-approved document.
A weekly one-pager for the owner who isn't aboard.
A vessel record is evidence. It gets read months later by a surveyor, an insurer, a buyer, or the next captain — and it is worth exactly as much as its weakest entry. theONE is built so an entry can be corrected without being erased.
Finished with a vendor, a job, an observation? It comes off the working list and keeps its history, its photos and its links. Deleting is the deliberate second choice, never the only one.
"Fixed" is not one thing. A fault verified on a sea trial is a different record from one worked around while the parts are on order — so theONE asks which, and a verified fix carries who verified it and when.
Re-open an incident or an observation closed by mistake and it goes back on the list — with the original close still sitting in its timeline, word for word. The current state can change; what happened does not.
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. And access works offline, because the crew doesn't stop needing the boat when the bars disappear.
Full access. Sets the vessel, invites everyone, owns the data.
Runs the boat day-to-day. Plans trips, logs runs, manages maintenance.
Handles schedules, vendors, and paperwork. No helm-side noise.
Logs hours, completes checklists, sees the trip plan and weather.
Read-only on systems plus write access to the jobs they're assigned.
Trip-scoped view: itinerary, safety brief, where things are. Expires when the trip ends.
iOS & Apple Watch · NMEA 2000 ready · NOAA weather, tides & charts (US coastal) · Coming Summer 2026
