Azamara Quest, one of the two ships of Royal Caribbean Cruises Ltd's luxury market Azamara Club Cruises unit, will drop three scheduled calls at Ukrainian ports in June and replace them with ones in Greece and Turkey, the company said in a statement.

"Due to recent events and uncertainty in Ukraine, we are modifying the Azamara Quest itinerary for the voyage of 12-June 2014. The primary change is replacement of three stops in Ukraine with new ports of call," Azamara said.

The revised itinerary will include overnight stay in Istanbul and night time passage through the Dardanelles, and calls at Bartin in Turkey and Nafplion in Greece.