251 Canadians are being quarantined on a cruise ship off the coast of Japan after an outbreak of coronavirus.

Princess Cruises confirmed the passenger count on the Diamond Princess on Tuesday night. None of the Canadian passengers have tested positive for coronavirus.

The cruise line told passengers on January 31 that the risk of coronavirus was "low."

Although the risk to our guests and crew is low, we are closely monitoring the evolving #Coronavirus response. Our medical experts are coordinating with @CDCgov and @WHO to implement enhanced screening, prevention & control measures for our ships. More: https://t.co/Wc5tvVJoBz

— Princess Cruises (@PrincessCruises) February 1, 2020

Doctors performed medical tests on all of the passengers and crew, which involved a questionnaire, taking temperatures, and performing mouth swabs.

So far, 10 passengers have tested positive for the virus and were transferred to a hospital.

All 3,700 people will be quarantined aboard the cruise ship for 14 days. Food and supplies will be provided.

The Canadian Embassy is working with Japanese authorities and cruise line officials.

The Embassy of Canada is working with Japanese authorities and cruise line officials regarding the quarantined ship in Yokohama. Canadian citizens requiring consular assistance can call us at +81 3 5412 6200 or email tokyo-consul@international.gc.ca and sos@international.gc.ca

— Canada in Japan (@CanEmbJapan) February 5, 2020

Guests requiring prescription medicine are being provided with it.

Passengers are being encouraged to remain isolated in their individual cabins, so additional TV channels have also been provided for entertainment.

Day 1: Arrangements are being made to collect passengers’ prescription medications. Four additional live tv channels are being added to ship feed, including USA, Australia, and China channels. We will dock at Daikoku pier tomorrow. #DiamondPrincess #quarantine

— quarantinedondiamondprincess (@quarantinedond1) February 5, 2020

However, many guests aboard the Diamond Princess are nervous and frustrated over the lack of communication.

Some are saying that the portion sizes of meals are inadequate.

After 20 hours of not being fed and being quarantined to their room, a small bowl of fruit and a yogurt is what the passengers received. How long until the next “meal”? This is inhuman and wrong. 14 days? People need their medicines. pic.twitter.com/LortdhlIoi

— InMinivanHell (@inminivanhell) February 5, 2020

And many are scared about what's going to happen next.

Tried to sleep but having a hard time, knowing that there is more test result come out tmw. Fear and unknown really got me #chill #outbreak #coronavirus #DiamondPrincess #quarantine #StayStrong

— Yardley Wong (@yardley_wong) February 5, 2020

It's been difficult to get in touch with the Canadian passengers onboard the ship, so some people have even started Tweeting at other guests asking for information.

There is quite a lot of Canadians on board but can’t reach them now since we are all self detained inside the cabin.

— Yardley Wong (@yardley_wong) February 5, 2020

A second cruise ship is also being quarantined in Hong Kong following a coronavirus outbreak.

There are Canadians among the two thousand passengers.