Coffee and the brief
What changed overnight, what wasn’t checked and what’s due—on one screen.
Items to review3
ThirdWatch - the AI for your yacht
Built around your boat. Shaped with you.
Your yacht.
Your AI Chief Engineer.
We’re building an onboard AI that brings your yacht’s manuals, equipment knowledge, maintenance history and connected system data together—so you can ask better questions, understand what needs attention and spend more time enjoying the boat.
Help shape it as a founding owner. Beta access will be by invitation as the product and your vessel’s configuration are ready.
Morning brief · 06:40 · at anchorIn development · concept with sample data
House bank
71%
Low 64% at 05:55 · generator on
Live · 2 s
Generator
46h
until oil & filter service
Live · hour meter
Fresh water
61%
≈ 3 days at your usual use
Stale · 2 h ago
Forecast
12kn SW
building to 18 kn after 15:00
Issued 05:40 · valid to 18:00
- Designed for offline use
- Built around your yacht
- Every reading shows its source and age
- You remain in command
The promise we’re working to deliver
An AI Chief Engineer that makes operating your boat safer, less expensive, and more enjoyable.
Owning a capable yacht should open up your world. Our goal is to make the knowledge behind that capability easier to use—bringing the right context to the owner, when it matters.
These are the outcomes we will test with owners, not results we claim today.
01Understand what matters.
02Plan work with better context.
03Enjoy more of the journey.
The vision
An AI that starts with your boat.
The make and model are only the beginning. The goal is an AI Chief Engineer grounded in the equipment actually aboard, the documents that apply and the history of work already done—then the systems data that brings it to life.
Sample vessel · 60 ft expedition trawler · at anchor
Concept interface · sample data
Runs aboard. Every value shows its source, age and quality. Native alarms stay independent.
Good morning. Here’s what changed overnight.
Thursday 06:40 · 18:00 yesterday to now
House bank
71%
Low 64% at 05:55 · generator on
Live
Overnight draw
6.8kWh
Within your usual 6–8 kWh
Calculated
Position
22m
Max distance from drop point
GNSS live
Fresh water
61%
Last reading 04:41
Stale · 2 h
Worth a look
- Forward bilge pump ran 4 times (01:12–04:30)Your usual night is 0–2 cycles. Observed, not a diagnosis.Suggested checks · applicable manual appears after equipment matching
- Battery feed missing 02:10–02:40Shown as a gap. Values are not filled in or guessed.
- Fresh-water sender stopped reporting at 04:41Check the tank monitor connection before relying on the level.
Before you get underway
- Raw-water strainer — not checked since TuesdayPart of your own pre-departure routine.
- Generator service due in 46 hLikely during the next leg. Filters and oil are aboard (last count Sept 22).
- Wind building to 18 kn SW after 15:00From the forecast issued 05:40; no newer forecast while offline.
ThirdWatch lists what it knows and what wasn’t checked. The decision to depart stays with you.
Power & anchorage
House bank state of charge, last 24 hours
State of charge
MeasuredGenerator runningNo dataEnergy in by source · last 7 days
SolarGeneratorAlternatorStay two more nights?
≈ 3.5h/day
Generator run time to stay above your 50% floor, if the next two days look like the last three.
Scenario · assumptions listed
Inputs: measured overnight draw, solar yield (cloud cover per 05:40 forecast), charger output. Changes nothing aboard.
Machinery
Main engine coolant temperature · yesterday’s passage, 1,550–1,650 rpm
Coolant temperature vs. your usual range
MeasuredYour usual range at this load10:52–11:14 · above your usual range by up to 3 °C. Observed against your own history at similar load—not a fault prediction.
Main engine
4,812h
+6.4 h yesterday
Hour meter
Avg fuel burn
7.4gph
at 8.0 kn, last 40 h
Calculated
Generator
1,204h
running since 06:00
Hour meter
Stabilizer oil temp
—
No sensor connected
Not available
Tanks & range
Levels, measurement basis and a range estimate you can question
Tank levels
Fuel1,520 galof 2,400 · sender
Fresh water245 galstale · 04:41
Grey34%sender
Black22%sender
Fuel level checked against fill and burn records: within 3%. Sender readings depend on trim and calibration.
Estimated range by speed
EstimateUncertaintyAssumes 20% reserve, calm conditions and burn measured over the last 40 engine hours. A planning aid, not an arrival guarantee.
Maintenance
Due by hours or calendar, from your records and the schedules that apply
- Generator · oil & filterEvery 250 h · last done at 958 h · parts aboard
46 h remaining
- Main engine · raw-water impellerEvery 12 months · last replaced Nov 2025
due in ~5 weeks
- Main engine · fuel filtersEvery 500 h · last done at 4,420 h
108 h remaining
- Watermaker · pre-filtersBy pressure drop or 60 days · last Aug 30
~3 weeks
- Stabilizers · annual serviceNo completion record found. Add it to start tracking.
unknown
Intervals shown are placeholders. Real schedules come from the manuals that match your equipment, and you confirm each completed job.
Ask your Chief Engineer
Three example questions · authored answers, no live AI
- Information needed
- Source
- Applicable manual appears here after equipment matching
Concept preview — illustrative information. No live vessel, AI or manual is connected.Advisory only · read-only by design
Your documents first. Connected insights as supported integrations become available.
Proposed sequence — in review
Telemetry you can trust
A number is only useful when you know where it came from.
Plenty of screens show readings. ThirdWatch is being designed to show how fresh each one is, what measured it and when something is missing—so a quiet screen never hides a dead sensor.
Live
Arriving on schedule from a known device.
71% · 2 sStale
Last good value, clearly aged. Not presented as current.
61% · 2 h agoMissing
No data is shown as a gap—never as zero, never smoothed over.
— · 02:10–02:40Estimated
Calculated from named inputs and assumptions you can open.
≈ 3.5 h/dayConflicted
Two sources disagree. Both stay visible rather than averaged.
8.1 / 7.6 kn
Life aboard
Built for life beyond the signal.
Core assistance is being designed to run locally aboard your yacht, including access to the manuals you choose to load. An internet connection can add capabilities; it should not be the condition for using the knowledge already aboard.
- Knowledge aboardYour vessel documents available for private offline use.
- Sources in viewApplicable information and missing context made visible.
- Human judgment in chargeAdvice supports the owner. Existing vessel alarms and navigation systems remain independent.
A day with ThirdWatch aboard
Less checking. More cruising.
How a Chief Engineer that knows your boat could fit into an ordinary cruising day. Sample moments, sample data.
Underway
Engine trends compared with your own history at similar load, not a generic redline.
Coolant vs usual+1 °C
Anchor down
Plan the evening’s power: who’s aboard, what’s running and how much margin you’ll keep.
Overnight draw (est.)6–8 kWh
A quieter night
A record of the night is kept for morning. Your native alarms stay exactly as they are.
Feeds recording14 / 15
A small group. A meaningful voice.
Don’t just try the future of yacht ownership. Help shape it.
We want to build this with owners who know their boats, ask good questions and tell us when something could work better. The proposed ThirdWatch Founding Owners Circle brings those owners into the development process—from the questions the Chief Engineer should answer to the details that make it useful aboard.
A direct line to the builders.
Small feedback conversations about your actual boating routines and frustrations.
A voice in what comes next.
Share use cases, review concepts and help prioritize what will make a difference aboard.
A closer view of the progress.
Preview evolving ideas and hear how owner feedback changes the product.
You bring practical experience and candid feedback. We bring focused development and an honest account of what works, what needs work and what comes next.
Invitations will depend on vessel fit, supported equipment and our ability to support each participant well. Applying is not a commitment to buy.
ProposedParticipation benefits and selection approach are proposals, not an active program.
Our approach
A focused team. A very big ambition.
We’re setting out to build the AI Chief Engineer yacht owners will want to keep aboard. That means listening closely, testing on real problems and earning trust one useful answer at a time.
Less distance between the owners using it and the people building it.
Reserved: founder portrait and personal noteSpace held for a real founder photo and a ~60-word note when supplied.
Questions
What a careful owner would ask.
Development status, offline use, hardware, cost and who stays in control.
Help build the Chief Engineer you wish you already had.
Bring your boat’s real-world challenges. Help us turn them into a better way to own and enjoy a yacht.
For hands-on owners who want to help shape what comes next.
Please check
Preview: this is where your application confirmation would appear.
No application has been sent. This prototype has no connection to any server, inbox or database.
In a future live version, this screen would say: “Thank you. We’ve received your application.” followed by “This is not yet an invitation to the beta. We’ll contact you if there is a suitable next step.” That flow is not active.
Draft — not a live program
This page is a placeholder in a design prototype. No privacy policy has been adopted, and this prototype does not collect, store or transmit any information you type.
What a future notice must cover before any live application
- Who receives application information and who can access it.
- The application fields collected, submission time and the consent/policy version.
- The separate, optional preference for development updates, and how to unsubscribe.
- How long information is kept and how to request deletion.
- That applying does not include vessel telemetry, boat documents or any training rights.
Final wording will be supplied by the company before publication.
Draft — not a live program
ThirdWatch is in development. The beta and the ThirdWatch Founding Owners Circle described on this site are proposals. No invitations, software or enrollment are available today.
What we currently intend
- An invitation-based beta for owner-operated expedition and cruising motor yachts, depending on the actual vessel and equipment.
- An advisory, read-only starting experience. The owner remains responsible for operating the boat; native alarms, navigation and protective systems remain authoritative.
- Free initial software download, installation and trial. Hardware, connectivity and professional installation are separate costs. Future paid terms have not been set.
- Reference hardware: a Mac mini with 64GB of memory, with installation, power, storage and connections assessed for each boat.
Not yet decided
- Beta timing, selection criteria and participant capacity.
- Supported equipment and integrations.
- Data handling terms for any trial.
Colour
Type
Hero 40–76
Heading 2 · 32–52
Heading 3 · 20–24
Body 17–19 px / 1.6. Manrope if installed locally, system humanist sans fallback.
Eyebrow · 13 px · tracked caps
Serif accent, founder statement only.
Status labels
In development
ProposedDraft — not a live program
Form states
Enter your name.