The settings here are for users with S-63 charts from the Australian Hydrographic Service (AHS). If you are using AHS charts, you can enable checks to occasional see if you have any chart updates. When chart updates are available, you can download them directly using this automatic download feature.
As with other S-63 chart sources, you will need to register your S-63 User Permit and provide it to your chart provider for them to create your chart permits. Please see Settings / S-63 Charts / Help for more information.
Downloading the AHS chart files does not require an account with AHS. However to use the AHS charts, you must install valid S-63 chart permits. Note that you install your permit files in the Files tab, using the normal import methods.
Downloads for base charts and updates from AHS can be quite large. Base charts may be over 200MB. Updates may be up to 50MB, depending on how many updates have been produced.
Recommended best practice is to only update your charts when you have a chance to validate the updates are correct.
From time to time, you may wish to remove old update files in the AHS Charts. After deleting such files be sure to do an Update so SEAiq can download any parts of those files that might still have been needed.
You can see the status being updated as the download proceeds. When complete, a notification is given.
Keep in mind that chart updates can be quite large. You may want to wait until you are connected to a high speed internet connection before downloading updates for your charts. If there is a problem during the download, the update starts again from the beginning.