This follows a No Sail Order for cruise ships originally issued by CDC earlier in March this year in an effort to minimise the spread of COVID-19 on cruise ships.
CDC wanted to extend the No Sail Order until February, however, the Trump administration blocked this move, the New York Times reported a month ago.
As explained, the new order establishes a framework of actionable items for the cruise line industry to follow so they can resume passenger operations with an emphasis on preventing the further spread of COVID-19 on cruise ships and from cruise ships into communities, and to protect public health and safety.