DP330 - NAVPAC & Compact Data 2016-2020 Version 3.4
2021 - 2025
With increased awareness of the vulnerabilities associated with relying on electronic positioning systems to provide the navigator with their location, NavPac and Compact Data is the celestial navigation software produced by Her Majesty's Nautical Almanac Office at UKHO. This can provide a valuable back up and an independent check of position.
A new version of NavPac is available for existing users of NavPac as a free download. Users need to have registered their copy of NavPac 3.4 before they can access the new version. Please note that this is not a new edition. It is an interim release during the lifespan of the current 2016-2020 version (V3.4).
