In article ,
Marcus AAkesson wrote:

Courtesy flags has no bearing on the nationality flag. The answer here
is:

a) If the vessel is registered it is not correct to fly another flag.

b)If the ship is NOT registered (as for example most swedish pleasure
crafts under 12x4 meters), You SHOULD fly the flag of the owners
nationality.

If the owner and/or captain has a different nationality than the
vessels registration, it is not uncommon to fly this flag under the
port spreader, similarly to the courtesy flag under the starboard
spreader. If the vessel has multiple flag halyards on the starboard
spreader, the captains/crews/owners national ensign is flown there,
inboard from the courtesy ensign.


For example, a french charter boat, with a swedish crew visiting
italy. Three flags.

Excellent, I have the answer. The Swedish flag under the port spreader.

Where did you look it up or where were you originally learn the rules ?

Thanks Marcus,



-Sven