Sailwatch
Bring the knowledge of a seasoned crew to every cruising boat.
Sailwatch Systems builds AI software for cruising sailors. Our apps work like extra crew: one helps you spot hazards ahead, one knows your next anchorage and port, and one keeps track of everything aboard and gets the right part to you when something breaks. Each app works on its own. Together they share one picture of your boat, your route and your plans.
We are sailors first. Every product is designed and tested at sea, aboard our test catamaran, by people who live the problems we solve. We are AI-native from the first line, so a small team can move quickly and keep good tools within reach of ordinary cruising boats.
The company.
| Legal name | Sailwatch Systems LLC |
|---|---|
| Founded | 2026, New Hampshire, USA |
| What we build | Sailwatch Ahead, Sailwatch Ashore and Sailwatch Aboard |
| Test platform | A Bali 5.2 cruising catamaran |
| Sea trials | 90 days of testing and data collection in summer 2026: La Rochelle, around Iberia, to Port Leucate, through France, Spain, Portugal and Gibraltar |
| Pilot season | Summer 2027, Atlantic Spain and Portugal |
| Funding | Founder-funded. Open to long-term strategic partners. |
Founder-led, sea-tested.
Slawek Kierner
Founder
An executive and cruising sailor, Slawek founded Sailwatch to give every cruising boat the kind of crew that long passages call for, and leads product, partnerships and the sea-trial programme aboard Bali 5.2 catamaran.
Sailwatch is a small team that uses AI tools every day, and we'll grow the crew carefully as our pilot season grows.
Join the crewFive things we won't compromise.
Seamanship first
Good tools make good sailors better. They never replace the watch, the chart or the skipper's judgement.
Sources, not guesses
Every rule, price and claim we show can be traced to where it came from, and when we checked it.
Tested at sea
Nothing ships until it has been used on a real passage, in real conditions, by real crews.
Honest about limits
Our apps tell you when they can't help. No silent failures, no overselling.
Your data is yours
Sharing is opt-in and anonymised, and you can delete everything at any time.
Work with us
Insurers, charter fleets, builders, marinas and research partners.
Partner with Sailwatch
Be one of the first boats to sail with Sailwatch.
We're inviting a small number of cruising boats to sail with our apps in summer 2027 and shape what we build.
Apply for early access