That's a lot of 17s.
According to Plutarch's Moralia, the Egyptians have a legend that the end of Osiris's life came on the seventeenth of a month, on which day it is quite evident to the eye that the period of the full moon is over. Now, because of this, the Pythagoreans call this day "the Barrier," and utterly abominate this number. For the number seventeen, coming in between the square sixteen and the oblong rectangle eighteen, which, as it happens, are the only plane figures that have their perimeters equal their areas, bars them off from each other and disjoins them, and breaks up the epogdoon by its division into unequal intervals. Source.Osiris' wife is Isis.
Unlucky number 17
The number 17 is considered unlucky in Italy so most Italian-owned ships avoid it. MSC Cruises doesn't have a cabin 17 or deck 17 on any ships across fleet. Why? The Roman numeral XVII is changed anagrammatically to VIXI, which in Latin translates to "I have lived". In other words: "My life is over". For the same reason you can bet that the Chinese won't be booking any cabins on decks four, or nine. Source.