Holland America's Ryndam, which was scheduled to dock September 14 in La Goulette (Carthage), Tunisia, will visit Sardinia, Italy, instead.
And Royal Caribbean, "in an abundance of caution," has canceled Mariner of the Seas' September 18 overnight call on Alexandria, Egypt. Instead the ship will visit Sicily, Italy on September 16 and Valletta, Malta on September 17.
Cunard's Queen Elizabeth will skip its scheduled September 15 call in Alexandria and replace it with a visit to Rhodes on September 16.
Though the U.S. State Department has not issued any Travel Warnings or Alerts, the embassies in seven countries advised Americans to be vigilant, the Associated Press reported. The warnings, posted by U.S. embassies in Armenia, Burundi, Kuwait, Sudan, Tunisia, Zambia and Egypt, don't report any specific threat.
A spokeswoman for Oceania, whose Marina is due to visit Alexandria on October 3, told Cruise Critic, "The safety of our guests, crew and vessels is always our number one priority, and we will never place them in harm's way. We are in contact with local authorities and closely assessing the situation."
Celebrity Cruises and Princess Cruises told Cruise Critic they are similarly monitoring the situation.
Other cruise lines scheduled to visit ports of call in Egypt are Costa, MSC and Holland America. Silversea, Princess and MSC also have ports of call scheduled in Tunisia.
--by Dori Saltzman, News Editor