Passengers passed the hours playing cards, walking the deck and going to see what was happening on other areas of the ship, Poret said.

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But when you are walking the long corridors, or standing on the top deck, way above the sea, its size feels more real.

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"I could be out walking in the garden and it would just come on and I would hit the deck, " he said.

BBC: Darren Kennish from the Isle of Man