If you receive an error during chart loading showing that there is an error with the public key, please perform the procedure below to ensure that the IHO public key is installed and active.

Open Chart maintenance mode and then click the [Public Key] button on the InstantAccess bar.

If the IHO.PUB is not listed, click on "Load New Key" and load it from NavBox/NavStick (\INFO\NAVTOR\CERT\)

If IHO.PUB is in the list, but not active, select it in the list, click the "Activate" button and the