IncusGrid

Sailing routes from real passages

See which connections other crews actually sail, in which direction and in which months. From Sicily to the Ionian Islands, for example, most boats head east in May and June and sail back in September. For every month, the route card shows the typical wind, point of sail and sea state along the way, and on how many days the weather suits the passage.

Plan a passage on the 10-day forecast

Set a start and a destination, choose your boat, and IncusGrid calculates a fast route on the ECMWF forecast: when you arrive, the strongest wind, gusts and waves on the way, the weather for every hour, the hours under sail and under motor with an estimate of fuel. Compare departures every six hours with their rain and thunderstorms, drag a waypoint to change the route, save passages and share them with your crew.

Weather routing offline

Make a passage available offline before you leave. At sea, without a connection, you still route it on the saved forecast, move waypoints and follow the boat against the plan.

The next 10 days on the map

Wind, gusts, waves and rain hour by hour for the next ten days, from ECMWF's global model, updated four times a day. Tap any place to see the forecast next to what is normal for the month.

Will the anchorage hold tonight?

Tap an anchorage on the forecast: a protection score for the next 72 hours shows how well the bay shelters you from wind, gusts and waves, with a verdict for every night and whether the boat will roll.

Ships on the map

Turn on Ships to see vessels worldwide from AIS, from sailing boats to tankers. Find a ship by name or MMSI and bookmark it.

My voyage

Tap "This is my boat" on your boat's card, or enter its MMSI: IncusGrid records where it sails from AIS. See your passages and the places it stayed, with distance, time under way and stops for any period.

Thousands of boats. Millions of movements. Billions of lightning strikes.

IncusGrid turns the knowledge of the sailing community into one map: where crews actually sailed and stayed over many seasons, and where thunderstorms really struck.

Everything about one place, on one card

Press and hold any place on the map: the spot report shows wind, sea state, thunderstorms and the seabed for that month, plus the boat stays and sailing routes nearby. Bookmark places, routes, ships and passages and add your own notes.

Where other boats stay

Boat stays show the harbours and anchorages where boats paused, by length of stay and season, and whether they lay in marinas, at anchor, on mooring buoys or in boatyards. Supply shows fuel, chandlers, shops and restaurants ashore.

Thunderstorm Risk and Terrain Exposure

Thunderstorm Risk combines how often storms occur, how violent they are and how the terrain shapes them, for every month and down to single bays. Terrain Exposure shows how well surrounding hills shield each part of a bay from lightning. Plus years of lightning, wind and waves, month by month and worldwide.

Free to start

Look around without an account: annual views, January and February on every layer, live ships and the first 5 days of the forecast are free. A free account adds March and April. Full access adds every month, forecast days 6 to 10, 72 hours of anchorage protection, passages over the whole forecast and offline, recording of your voyage, Terrain Exposure and the seasonal details of routes and boat stays.

Made for planning

Search for your sailing area, set up your boat once, explore on phone or tablet, in 19 languages.

IncusGrid is a planning tool, not a navigation aid. Forecasts can be wrong, late or unavailable, the planner does not include currents or the last miles into harbour, routes are drawn schematically and boat stays are derived from pauses in boat reports. Never use AIS positions to avoid collisions. Always check official forecasts, charts and local conditions before you go to sea.