Originally Posted by S/V Alchemy
This is correct. I am dual British and Canadian, but the boat's "all Canadian" and is federally registered by name...meaning I do not in fact have a "boat number" or license
number on display at all. Only if I transferred the registry to Britain (and that's not likely!) would I be entitled to fly the Red Duster.
Note that the Red Duster (civilian ensign for British boats) is NOT a courtesy flag, although I've seen it enough as such. The Union flag would be flown from the starboard spreader halyard
of a sloop-rigged vessel (and it's possible to get it upside down!).
I have never seen an objection to flying other flags
beneath this courtesy flag, like maybe the Welsh or Scots or even the EU flags
, as long as the Union flag is on top when visiting British ports
The same would apply to any "dualie", I would think. The exception in Britain is that serving (and perhaps retired) members of the various armed forces can opt for those respective ensigns on their privately owned yachts.
This is not correct the Union flag is never outside of military vessels used as a courtesy. The correct courtesy flag is the civilian maritime ensign. Goverment. Ships should fly the appropriate defaced ensigns.
The UK along with Ireland
also has many approved yacht club ensigns. These ate valid once worn with the appropriate club burgee and the club member