The Vision of the Seas lost power during the early morning hours of May 22, 2018. Several passengers are reporting that the Royal Caribbean cruise ship sustained a power and propulsion outage, leaving the ship floating in the Sea of Crete with only its emergency lighting on.
Subsequent information is that the ship regained power

Cruise veteran Linda Coffman reports on her
Several Royal Caribbean customers have reported that propulsion issues which the Allure of the Seas experienced several years ago have returned and will interfere with the cruises which are scheduled in the future.
Numerous passengers have informed us that the Carnival Dream has incurred power problems which have necessitated the Carnival cruise ship to skip the port of Cozumel.
Celebrity Cruises passengers intending to depart yesterday on the Celebrity Constellation from Barcelona, Spain are stuck in that port for two days due to propulsion issues, even though the cruise ship just came out of dry dock.
A number of
The Paul Gauguin cruise ship reportedly lost propulsion and has been stuck in Bora Bora for the last several days,
The Carnival Spirit has developed a problem with its propulsion system, forcing it to reduce its cruising speed. As a result, the Spirit will be delayed arriving in Sydney on Wednesday, and will arrive at approximately 3:00 PM.
Cruise ships losing power or propulsion have been a dime a dozen in recent years.
Royal Caribbean’s Allure of the Seas, the largest cruise ship in the world, will enter dry dock in the Bahamas in February 2014 to undergo repairs to its propulsion system.