tug boat, passenger ship. 拖船, 客輪

A tug boat leads the way for the world's largest passenger ship, Harmony of the Seas, owned by Royal Caribbean, as it makes her way up Southampton Water, into Southampton, England, Tuesday May 17, 2016, ahead of her maiden cruise. After 32-months being fitted out in a French shipyard the 16-deck Harmony of the Seas will set out on its inaugural voyage on May 22 bound for Barcelona, Spain. (Photo by Andrew Matthews/PA Wire via AP Photo)
The Day in Photos – May 20, 2016
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