The chart
A chart-style map from open data.
Depth bands, seamarks with their light characters, terrain contours, and every anchorage, fuel dock and hazard we can find in open data. No chart subscription, no per-region purchase.
On the water
What the map knows.
- Seamarks and lights, with their characters. Lighthouses and buoys worldwide from OpenStreetMap, written the way a chart writes them: Fl(2)R.10s7m8M.
- Terrain contours and hillshading. So you recognise an island by its silhouette before you recognise the bay.
- Tides where they matter. Tide height at your arrival time, and the depth in the anchorage corrected for it.
- Nearby, ashore. Restaurants, drinking water, shops, beaches, pharmacies, ATMs and ferries around the bay.
- Map fixes shared between users. Open a narrow passage, close an area, or define a corridor the auto-route has to follow.
- Offline when you need it. A map pack puts the region on the phone before you go, and the app shell and the tiles you have already seen stay there anyway.
- Your units, not ours. Knots or km/h, feet or metres, gallons or litres.
Sources and layers
What is on the map.
Depth bands, contours and soundings come from open hydrographic data. It is a model of the sea floor rather than a survey of your bay, so the sounder stays the last word on what is under the boat.
Where the depths come from
- Europe
- EMODnet Bathymetry
- United States
- NOAA
- Australia
- AusSeabed
- New Zealand
- LINZ
- Worldwide
- GEBCO
Layers you can switch on
- Anchorages and mooring buoys
- Fuel docks
- Facilities ashore
- Hazards
- Restrictions
- Fish farms
The chart, the places on it and the weather all work everywhere your boat meets the sea.
The map is a planning aid, not an official nautical chart.
See coverageFind your day on the water.
Set your boat up once, and every route you care about gets a ten-day answer.
App StoreAvailable soonGoogle PlayAvailable soon
Three days free when it lands. No card to start.