Bridges
Photo, dimensions, and water-level- or tide-dependent clearance at your estimated arrival.
Look-ahead navigation that travels with you
There is no route to plan and no need to keep watching the map. Rivers & Seas can check the waterway in the background and alert you before you reach a closed lock or a bridge that will not fit—or meet a large vessel coming the other way.
Set off instead of planning ahead
Your position, direction, and speed are enough. The view keeps updating and brings forward what you will reach next. When you follow a visible Track, Rivers & Seas recognises it automatically and aligns bridges, locks, and notices with its course, with no navigation start button required. Without a suitable Track, the look-ahead follows the detected waterway. After a lock, arrival at every later place includes its stored duration, or 30 minutes when none is available.
Photo, dimensions, and water-level- or tide-dependent clearance at your estimated arrival.
Operating time, closure, VHF, telephone details, and the duration included in later arrivals.
Commercial vessels, ferries, and oncoming traffic in the context of the waterway.
The map is closed
The map does not need to be open. On an iPhone or iPad with its own location capability, suitable location changes can trigger another check. When Rivers & Seas finds something important, a notification can show the key fact, distance, and estimated time to arrival.
Closures, restrictions, and known opening hours can warn you when a facility will be unavailable at your arrival.
Where the required dimensions are known, insufficient height or width can appear directly on the Lock Screen of an iPhone or iPad.
Available recent AIS traffic can draw your attention to a large vessel or crossing ferry ahead.
When the analysis finds a suitable shared arrival, Rivers & Seas can show the speed needed to reach the lock together.
Allow notifications and set location access for Rivers & Seas to Always. The feature can then work in the background on iPhone and iPad with their own location capability. iOS and iPadOS decide when to trigger a check, so there is no guaranteed time or distance interval. Wi-Fi-only iPads without their own location capability are not supported.
Arrival, not static data
Rivers & Seas combines boat dimensions, current speed, gauge levels and tides, opening times, and available navigation notices. Many separate facts become one clear answer: Will the bridge fit when you arrive, will the lock be open, and what traffic lies ahead?

On gauge-dependent inland waterways and at the coast, the expected clearance when you reach the bridge matters—not a static chart value.

Operating times, closures, and notices relate to your arrival instead of sitting in a separate list beside the map.

A large vessel around the bend or a crossing ferry appears early as part of the situation on your waterway.
Notices without searching authority portals
Rivers & Seas processes available notices to skippers, connects them to the waterway, and turns them into plain-language information or warnings. Closures, restrictions, and changed operating times appear where they matter for the journey.
Spend less time waiting at locks
Rivers & Seas automatically compares when you and the commercial vessel will reach the next lock. Alongside VHF and telephone details, you see the speed needed to arrive with that vessel.


Know the structure before you arrive
Bridge photos and dimensions make structures easier to recognize. For locks, available operating times, VHF, telephone, usable length, width, and draft appear together. There is no need to assemble critical details just before arrival.


For inland and coastal cruising
The boating map works worldwide. Rivers & Seas is especially detailed on German and European inland waterways, with gauge-dependent bridge clearances including Berlin-Brandenburg's Spree, Havel, and canals, as well as the Danube and Elbe. Tides and coastal charts make it useful on the way to sea as well.
It all belongs together
The public beta is free. The finished app is planned at one fixed purchase price for every feature and cruising area.
Experience Waterway Ahead
Install the public beta, or try the browser map with real AIS targets first.