HMS Victory, flying the Blue Ensign (with the pre-1801 Union Jack), from The Fleet Offshore, 1780–90, an anonymous piece of folk art now at Compton Verney Art Gallery. Source: [CCSA 3.0] Neddyseagoon via Wikimedia Commons https://en.wikipedia.org/wiki/HMS_Victory#/media/File:HMSVictoryFromTheFleetOffshore.jpg