Princess Cruises just suspended all operations for 60 days due to the growing worldwide spread of coronavirus.

The Miami-based cruise company will anchor all 18 ships effective immediately due to "unpredictable circumstances evolving from the global spread of COVID-19."

President Jan Swartz called it the "most difficult decision in our history."

We have always been dedicated to one truth: the health, safety, & well-being of our guests, teammates, & communities we visit. #PrincessCruises President Jan Swartz shares an update on how our company is upholding this core value during this unprecedented time. pic.twitter.com/5u6pSR62Cb

— Princess Cruises (@PrincessCruises) March 12, 2020

Swartz said, "We've asked ourselves why COVID-19 seems to be impacting Princess so heavily."

"We don't really know."

"What we do know is that we're the world's cruise line," she continued. "Our team comes from over 100 nations and we visit over 380 ports of call around the world… so perhaps [that's why]."

(1/4) We want to thank you all for your patience and continued support as we navigate unprecedented circumstances. We also appreciate the overwhelmingly positive response to our Cruise with Confidence cancellation and final payment policy updates.

— Princess Cruises (@PrincessCruises) March 9, 2020

Guests that are on voyages ending before March 17 will continue the cruise uninterrupted; guests sailing past that time will be dropped off "at the most convenient location" possible.

Princess Cruises has been hit particularly hard by the 2019 novel coronavirus, with two of its ships experiencing widespread outbreak in the last two months.

The Diamond Princess — which was quarantined off the coast of Japan for 14 days — had more than 700 infected passengers and crew, including some of the 251 Canadians aboard.

5 more Canadians test positive for coronavirus on cruise ship https://t.co/uBkcNUcPHc #Canada #Coronavirus #Wuhan #DiamondPrincess #Japan pic.twitter.com/uovjOihGCy

— Freshdaily (@freshdaily) February 7, 2020

The Grand Princess, which was moored off the coast of California, had 21 cases. The repatriated Canadians are now in isolation at the Canadian Forces base in Trenton, Ont.

Canada has advised against travelling on cruise ships until the coronavirus outbreak poses less of a risk.