Coverage
The whole U.S. coastline, in Pathr's own chart.
This is Pathr's vector chart, drawn in your browser from the same chart data the app uses: depth-shaded water, hazards, and aids to navigation. Search for your harbor or pan anywhere we cover.
Everything a paper chart has. Live.
Pathr's chart isn't a picture of the water. It's every layer a captain reads, rendered from official data and ready to route on.
Depth-shaded water
Depth shaded in bands from shallow to deep, so you read the bottom at a glance.
Soundings
Spot-depth numbers across the whole chart, not just the channel.
Aids to navigation
Buoys, beacons and lights in full IALA color: reds, greens, cardinals and more.
Hazards, flagged
Wrecks, rocks and obstructions where NOAA charts them.
Anchorages & zones
Anchorage areas, restricted zones and traffic lanes, drawn in.
Marinas, docks & piers
Piers, docks and breakwaters along the waterfront.
Bridges with clearance
Bridges with the vertical clearance NOAA charts for them, to check against your mast.
Works offline
Download your area and the chart works with no signal (200 MB free, 5 GB with Premium).
We keep filling in the chart.
Five regions Pathr didn't cover before, now charted from the shoreline out. Here's the real bathymetry.
All five lakes + St. Clair
Superior, Michigan, Huron (with Georgian Bay), St. Clair, Erie and Ontario. The nearshore ring is charted on each lake's Low-Water Datum.
NCEI Great Lakes grids
The full island chain
Kauai, Niihau, Oahu (Pearl Harbor's inlet visible), Molokai, Lanai, Maui, Kahoolawe and the Big Island. Every main island now has nearshore depth.
NOAA CUDEM 1/9″ (~3 m)
Astoria to Portland & Vancouver
The Columbia from the Astoria bar up past Longview to the Portland / Vancouver reach. Built from the CUDEM bar tiles and the USACE P260 river survey.
CUDEM + USACE P260
Full island shelf
The whole Puerto Rico coastline and insular shelf, charted at the same resolution as the mainland coasts.
NOAA CUDEM 1/9″
St. Thomas · St. John · St. Croix
All three main U.S. Virgin Islands, from the shoreline out across the shelf, alongside the Puerto Rico territory product.
NOAA CUDEM 1/9″
Built from the data the pros use.
Depths, hazards and aids to navigation come from NOAA and USACE data; land and shoreline from OpenStreetMap.
- NOAA Electronic Navigational Charts (S-57)
- NOAA CUDEM bathymetry (1/9″)
- USACE channel surveys
- NCEI Great Lakes grids
- OpenStreetMap (shoreline & land)
Coverage, answered.
- Is this a real nautical chart?
- It's built from NOAA's official Electronic Navigational Charts (S-57) plus NOAA and USACE bathymetry, rendered in Pathr's own style. The map above is drawn in your browser from the same chart data the app uses. Pathr is a navigation aid: carry the charts and equipment your boat requires.
- Do I need cell service on the water?
- No. Download your area once and its chart, including depth, hazards and aids to navigation, works with no signal (200 MB of downloads free, 5 GB with Premium). Live weather and AIS traffic need a connection.
- What areas are covered?
- Every U.S. coast, the Great Lakes, the rivers NOAA charts, Hawaii, Puerto Rico and the U.S. Virgin Islands. Search or pan the map above to check your water.
- My spot isn't charted. Can you add it?
- Request it below. We log every request and chart the areas boaters ask for most, first.
- How current is the data?
- We rebuild from the latest NOAA ENC releases and keep adding new bathymetry and coverage.
Request a location
Don't see your water?
Tell us where you sail. We read every request. If we chart your area, we'll email you.
