Sources close to the deal told Reuters an announcement could be made this week, but no parties involved are commenting officially.

The owner of Prestige, private equity firm Apollo Global Management, has 20% of NCL, while NCL’s main shareholder Genting, the Malaysian owner of Star Cruises, has indicated it could be willing to sell its NCL stock, valued at $1.88bn.

NCL has 13 cruiseships, while Miami-based Prestige operates five vessels under the Oceania Cruises brand and three more as Regent Seven Seas.

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