Bought a copy of this book at Borders today (very nice, BTW) and noticed that this book seems to have been released with two different covers. My copy features an imposing head-on shot of the ship, similar to the famous French Line 'Normandie' poster. However, the cover shown on most online bookstores shows a perspective view of the bow with the bridge wings visible. Is there any difference between the two editions, besides the different covers?