Mega-yacht Topaz arrives in New York

On my morning walk I spotted this enormous yacht sailing from New York Harbor into the Hudson River. I guessed it must belong to some Russian oligarch, since a couple of other such yachts--see here and here--have recently arrived here. Searching the net, I was able to determine that this yacht is Topaz, which arrived here today from Algeciras, Spain. Topaz, which is one of the world's largest yachts, is of mysterious ownership, although the owner, as reported here, may be His Highness Sheikh Mansour bin Zayed bin Zayed Al Nahyan, Deputy Prime Minister of the United Arab Emirates.