Marine OS Navigator
Plan on the web. Navigate on the water.
The Marine OS companion app: your planned routes with voice guidance, an anchor alarm that actually wakes you, a man-overboard button, live weather, and fuel prices - in one app that signs into the account you already have.
Everything the helm needs
Navigate your planned routes
Sign in and every route you built in the web planner is on your phone: waypoint-by-waypoint guidance with voice, live ETA, and off-route alerts. Start from any waypoint mid-trip.
Anchor alarm
Set the swing radius and sleep. If the boat drags outside the circle, the screen turns red and the phone plays its real alarm sound until you are back inside.
Man overboard button
One tap pins the exact spot and shows live distance and bearing back to it until you clear it.
Weather where you are
Wind, gusts, and waves at your GPS position, now and for the next 12 hours, with the same calm-to-severe comfort rating as the planner.
Fuel prices near you
Nearest fuel docks with prices, sorted by distance - marina live prices plus boater reports.
Share your trip live
One tap creates a link your family opens in any browser and posts your position while you navigate.
Install in one minute
- 1Download the app on your phone with the button above.
- 2Tap the downloaded file and allow the install when Android asks.
- 3Sign in with your Marine OS account - or create one first on the website.
- 4Your saved routes appear. Tap Navigate, and take it on the water.
A planning and guidance aid - not a substitute for official charts, a certified chartplotter, or prudent seamanship.
Frequently asked
How do I install Marine OS Navigator?
Download the app file on your phone, tap it, and allow the install when Android asks. Sign in with your Marine OS account - the same one you use in the route planner on the web.
Do I need an account?
Yes - the app signs into your Marine OS account so your planned routes appear automatically. Creating an account takes a minute on the website.
Does navigation work without mobile signal?
GPS works everywhere - it does not need signal. Map tiles and route loading need a connection, so open your route while you still have coverage; guidance then continues on GPS.
Which features need Boater Pro?
On-the-water navigation of your saved routes is part of Boater Pro, managed on the website. The anchor alarm, weather, fuel prices, and MOB tools work with any account.
Plan your first route in the route planner guide, or see what Boater Pro unlocks.