Routed for what your hull draws
Set your vessel once. A jet ski can cut across the flats; a deep keel keeps to the channels.
Waze for the water · boats & jet skis
Boaters share what they see: patrol boats, sandbars, no-wake zones, debris, manatees, fish biting. Boatze warns you by voice as you get close, and routes you through the channels instead of over the shoals.
Free on iPhone and Android. Launching in Florida waters first.
Navigating · the line turns amber where the water is slow speed
The app
Big targets, voice alerts and short trips through menus, because one hand is on the throttle. Swipe through the main screens.
Map markers
The same illustrated markers you see in the app. A patrol boat moves, a sandbar doesn't: every report lives as long as that kind of thing usually lasts, then fades from the map on its own.
Drawn as a line-of-sight zone, cut off behind land and islands. Inside it you hear "Police can see you".
Hazards and conditions that change how you run. No-wake and accidents become speed zones; a "Wrong route here" report teaches the planner to go around.
Sightings reach Boatze users within a few miles, each person picks which ones in Notifications. Manatees and turtles slow you down.
Marinas, fuel docks with prices boaters post (gas, REC-90, diesel), restaurants you can dock at, ramps, beaches, bait, rentals, dive shops and towing.
Ships are drawn from above, pointed where they're heading and sized by their real length. Boatze sounds an alarm when one is closing on you. Sea Tow and TowBoatUS boats get their own orange mark.
Official Florida FWC manatee and boating zones, plus what boaters report. The route line takes the color of the water it crosses.
Other boaters confirm what they see or mark it gone. Each confirmation keeps a patrol report up another hour and other reports another day.
Routing
A car app follows roads. On the water there are no roads, only charts, tides and whatever your hull draws. Boatze traces every trip around land, shallows and no-entry zones, checks it, and learns from the trips boaters really make.
A search on NOAA charts (and OpenStreetMap shoreline where charts don't reach) steers around land, water too shallow for your draft, and no-entry zones, and prefers marked channels like the ICW.
Slow and no-wake stretches are timed at the legal speed, so the arrival time is the one you'll really get.
The finished line is held against the charts leg by leg. Anything that touches land or a shoal is traced again and spliced in.
Zig-zags become clean shortcuts, taken only over water that's known to be clear.
The last stretch goes into the marina basin or canal and onto the dock, ramp or beach you picked.
Set your vessel once. A jet ski can cut across the flats; a deep keel keeps to the channels.
Boatze looks up NOAA tide predictions over the whole trip window. A low tide makes the shallow bands cost more; a high tide never talks the route into skinny water. Safe first.
Trips shared with "Help the activity map" on teach Boatze which water boats like yours really run, at which tide. Those cells become preferred lanes for everyone, anonymously.
Report a bad spot and the planner routes around it from then on. When three different boaters leave the line at the same place, Boatze learns that too.
In the background, Boatze keeps adding water points along the coast, rechecks old segments against the latest charts and straightens the long runs. Nightly test trips catch any regression.
More on board
Turn by turn, zone by zone, in a natural voice (Heart or Michael), with alerts that keep working with the screen locked on the native app.
"Police ahead." → "Slow down. Police can see you."
Over speed inside a no-wake, manatee or turtle zone? Your phone says so and vibrates. Choose which report types alert you and how.
Marine forecast, wind, tides and currents from NOAA stations, nearby buoys, water temperature and weather radar. The depth under your boat, at low tide, right under the speed.
Ships on AIS with a close-approach alarm, and an alarm when you come into view of a marine patrol base.
Sandbars, islands, anchorages, snorkel and fishing spots shared with photos. Ranks from Deckhand to Admiral: experienced boaters' votes count more.
Add friends with a code or QR, share your live position with them only, and record and share your favorite routes.
Saved places and trips, stops along the way, and a trip that comes back with Resume if the app closes mid-run.
The activity map shows where boaters are this weekend. Positions are rounded to about 250 meters and an area only shows once two or more people have been there.
Boatze is free for iPhone and Android. It's in testing now and launching on the App Store and Google Play soon.
Questions, a partnership, or want in on the beta? Write to support@boatze.app.
Reports come from other boaters and can be wrong or out of date. Boatze is not an official nautical chart and doesn't replace a proper lookout, local knowledge, your depth sounder, or the rules of the road. Always follow posted speed and no-wake limits, whether or not anyone reported a patrol.
Charts and depth: NOAA nautical charts, NOAA tides and currents (CO-OPS), NDBC buoys, NWS forecasts, CoastWatch; GEBCO bathymetry.
Shoreline outside chart coverage: © OpenStreetMap contributors (ODbL).
Zones: Florida Fish and Wildlife Conservation Commission (FWC).
Map and places: Google Maps. Weather: Open-Meteo.com (CC BY 4.0). Radar: Iowa Environmental Mesonet.
Ships: AIS data from AISStream.io. Voices: Kokoro (Apache-2.0).