VOYAGERDEMO · Sample passagesDrag the green circle or tap its new position. Save to recalculate the voyage and recheck the legs.
ETA updates automatically after waypoint changes. Enter speed and departure time.
| WP / name | Latitude | Longitude | Course GC / RL °T | Leg NM · next | DTG NM | ZD | ETA local | ETA UTC |
|---|
Course and leg distance lead to the next waypoint. DTG follows the remaining track. ZD: UTC = local + ZD, effective at ETA and including daylight saving. Offshore times use planning zones.
Save the app while connected before using it offline.
Extract the complete ZIP before opening the HTML. Port search, route proposals, waypoint editing, ETA, bridge calculations and bundled references run locally. The included chart corridors and tide references have limited coverage. Live AIS, imagery and current notices are unavailable offline.
Zoom to a channel or harbour. Save the visible chart area with depth areas, buoys, traffic lanes and chart symbols. Maximum 64 MB per area; large areas need a closer zoom. Downloading does not approve a route or update chart data automatically.
Checking saved chart areas…
Save the app and each required chart area on this device before leaving coverage. One selected area is used at a time. Checks outside it stop; select another saved area or reconnect. Keep Open Waters and its source attributions visible when sharing charts.
Withheld · no validated route
At your planned speed over ground
Destination zone includes daylight saving
One continuous time reference
Navigation route unavailableNo route, distance or ETA is released without current chart coverage and route validation.
One worldwide reference map for port exploration and passage preparation. Connect a licensed global ENC service for authoritative chart coverage and updates.
Esri ocean relief, GMRT numeric depths and contours, and OpenSeaMap buoys, beacons and lights. Available worldwide; detail and coverage vary.
OpenSeaMap reference ↗Worldwide official ENC services and updates. Web access requires a provider agreement; an approved navigation system and route checks are separate requirements.
Worldwide ENC service ↗C-MAP is not connected. Its public Chart Explorer is a preview only. Supplier approval, suitable app licensing and supported data access must be confirmed.
NOAA’s U.S. ENC display supplements the worldwide reference map. It does not validate a voyage.
| POINT | POSITION · WGS 84 | COURSE °T | LEG NM | TOTAL NM | ETA · GMT/UTC | DEPTH STATUS |
|---|---|---|---|---|---|---|
| Your voyage waypoints will appear here. | ||||||