Navigation for sailors

The water ahead, on your phone – even without signal.

buoya shows depths, seamarks, tides, currents and wind for your sailing area, plans routes that keep to your draft and keeps working offline.

Two sailboats passing Sunset Key off Key West, palm trees and cumulus clouds over turquoise water
buoya chart of Key West: the dredged Main Ship Channel as a violet corridor, lateral buoys alongside, depth areas in shades of blue and the town on land
Sunset Key off Key West – and the same water in buoya.
Florida, in the app

Channels, buoys and shoals, the way the chart shows them

Depth areas, dredged channels and buoyage are drawn from NOAA's electronic navigational charts. Three places on the Florida coast, exactly as buoya draws them.

  • buoya chart of Key West: the dredged Main Ship Channel as a violet corridor, lateral buoys alongside, depth areas in shades of blue and the town on land
    Key WestMain Ship Channel and the harbor
  • buoya chart of Miami: Government Cut between Miami Beach and Fisher Island, with red and green buoys along the channel and shallow banks either side
    MiamiGovernment Cut
  • buoya chart at the mouth of Tampa Bay: the shipping channel as a violet band, mangrove keys in green and depth areas shading from pale to deeper blue
    Tampa BayThe channel at Egmont Key

Screenshots from the app. buoya is not a nautical chart – always carry official charts and keep a lookout.Where the pictures and the chart data come from

What buoya does

Depths and seamarks

Depth areas from official survey data, buoys and lights drawn the way they are on the chart.

Tides, currents and wind

Tide predictions, tidal streams and the wind forecast for where you sail.

Routes around the shallows

Plan a passage that keeps to your draft – or let the router sail it by the wind.

Works offline

Download a region before you leave; everything keeps working without signal.

Anchor watch and MOB

An anchor alarm for the night and a man-overboard mode that keeps the track.

Share your trip

A live page for the people at home, with your position and progress.

Aerial view of the Seven Mile Bridge and the old Flagler railroad bridge running across turquoise water in the Florida Keys
The cruising guide

From the Panhandle to the Dry Tortugas.

In the cruising guide

A page for every harbor, mooring field and anchorage – written from the operator, NOAA, the park service and the law, with every figure naming its source and the day it was checked.

A catamaran with its sails down on open blue water at the Dry Tortugas, with towering white clouds

Take the water ahead with you.

Download your region at the dock. Depths, seamarks and tides stay on the phone when the signal doesn't.

Pictures and chart data