Color Viking formally Stena Invicta, now works for Color Line
Actually she is flying the blue ensign of Great Britain and the Stars and Stripes at the foremast head as a courtesy flag, presumably indicating that she was bound for the USA not, of course, being in US waters.
There would be nothing strange about Titanic flying the American flag. She was an American ship owned by the American shipping company White Star Lines.
Who are you to tell 2 moderators to get back on topic when they are offering a perfectly reasonable explanation to someone Name this French ferry built 2005.
The "Booze cruise" ship Cinderella.. http://alannaheames.wordpress.com/
So it's anyone to go..