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Offline maps
If you are out of cellular coverage, you download your cruising area to your phone or tablet beforehand. You place a rectangle over the area on the map and tap Download. One download covers up to 150,000 km², which is roughly an area of 200 by 200 nautical miles. You download as many areas as you need. After that every map in the app shows this area even without internet, on board as well as ashore. For the base map you need no account, no Hub and no subscription, and downloaded areas stay on your device with no expiry date. With the Standard subscription every download also contains the nautical charts that are available for your area.
What you get
On board and ashore
- Free choice of area: per download a rectangle from 0.5 to 150,000 km² (roughly 200 by 200 nautical miles), downloaded at zoom levels 11 to 14.
- Any number of areas: For a larger cruising area you simply download several areas next to each other.
- “Maps” list: per area the name (nearest place, date and time, for example “Heiligenhafen - 25.09.2026 14:03”) and size; running downloads with a percentage display.
- Usable on every map in the app as soon as there is no connection to the map server: Plotter, Dashboard, Sea Map, boat monitoring, logbook.
- No expiry date: Downloaded areas stay on your device until you delete them.
- Nautical charts in the download: With the Standard subscription every download automatically also contains the nautical charts available for your area, currently the official nautical charts of the BSH for Germany and of NOAA for the USA.
How it works
Downloading an area
- Open Menu › Settings › Offline Maps (section “Map”) or, on the map, the layers button and there “Offline Maps”.
- Tap “Select region”. You need internet for this.
- Pan and zoom the map until the rectangle covers your cruising area. The size is shown above the rectangle.
- Tap “Download”. The download keeps running while you use the app normally.
- When it is finished, the area appears in the “Maps” list.
Cancelling a download
- Press and hold the downloading area and confirm “Cancel download?”.
Viewing and deleting an area
- Tap an area: The map shows it, and “Delete” at the bottom deletes it immediately.
- Or press and hold the area and confirm “Delete {name}?”.
Renewing an area
- Delete the area and download it again. Updating or extending is not possible.
Requirements
- Internet on the phone or tablet for selecting and downloading.
- Enough free storage on the device.
- For the base map: no account, no Hub, no subscription needed. For the nautical charts in the download: Standard subscription.
Permissions and subscription
- Subscription: Without a subscription you download the base map offline, without aids to navigation. With the Standard subscription the download additionally contains the available nautical charts, currently of the BSH for Germany and of NOAA for the USA.
- Roles do not matter: Offline maps belong to your device, not to a boat, Hub or account.
Notifications
None. There is a notice only for errors.
Messages and special cases
If a download fails, “Map download failed” appears at the top, with below it:
| Situation | Message |
|---|---|
| No internet | “Could not connect to the map server. Please check your internet connection.” |
| Access to the map service expired | “Access to the map service could not be renewed. Please try the download again.” |
| Storage full | “There is not enough free storage for this map. Free up storage or select a smaller region.” |
| Download stalls | “The map download stopped responding. Please check your connection and try again.” |
| Area already downloading | “This region is already being downloaded.” |
| Area invalid | “The selected region could not be prepared. Please select the region again.” |
| Map server fault | “Something went wrong connecting to the map server. Please try again later.” |
| Cancelling not fully successful | “The map download could not be stopped completely. Please try again.” |
| App closed during the download | in the list: “Download interrupted. Remove this region and start the download again.” |
| Area too large or too small | “Please select a smaller region.” or “Please select a larger region.” instead of the Download button |
- After an error the app deletes the parts already downloaded, and the area disappears from the list.
Offline behaviour
- Downloaded areas survive a restart, signing out and switching between Hub and cloud.
- On board without internet every map uses your areas automatically.
- A running download only lives as long as the app is running.
Frequently asked questions
How do I download maps for use without internet?
Open Menu › Settings › Offline Maps, tap "Select region", place the rectangle over your cruising area and tap "Download". After that every map in the app shows this area even without internet.
How large may an area be?
One download covers up to 150,000 km², which is roughly an area of 200 by 200 nautical miles. For a larger cruising area you simply download several areas next to each other.
Do I need an account or a subscription for offline maps?
Not for the base map, and no Hub either. With the Standard subscription every download additionally contains the nautical charts available for your area, currently the official nautical charts of the BSH for Germany and of NOAA for the USA.
Do downloaded maps expire?
No. Downloaded areas stay on your device with no expiry date until you delete them, also across restarts and signing out.
How do I delete an area?
In the "Maps" list tap the area and "Delete" at the bottom, or press and hold it and confirm.
My download was interrupted. What now?
A running download only lives as long as the app is running. If the list says "Download interrupted", remove the area and start the download again.