Paging Dr. Mengele...

From SiG's blog:
Quarantined Cruise Ship In Japan May Now Be The Best Place To Study The Corona Virus.
 

It's only "best" in the sense that you're going to kill a given number of persons, to a metaphysical certainty, most of them needlessly.

The castaways are only as smart as Gilligan, and those 3711 people, passengers and crew, are only as safe as the stupidest person on the ship, because that's the guy who's the 21st century Typhoid Mary, cheerfully spreading infection hither and yon. In this case, Gilligan is a Japanese quarantine worker:

"It's reported that the Japanese quarantine worker wasn't wearing highly protective clothing for high biosafety level areas, just wearing a mask and gloves.  He was handing out questionnaires and checking the health of passengers and crew members."

Top. Men.

(Bonus Question for Japan's PTB: How many Japanese citizens did Gilligan unknowingly expose and/or infect after he left the ship, and before anyone knew he'd contracted the virus? Get back to us in 14 days, quarantine geniusii. The ironic humor, it kills us.)

That Gilligan Factor may also include the ship's air handling system and/or plumbing, which isn't segregated, nor sterile, so keeping everyone in the rooms of a steel ship is tantamount to having the sickest of them coughing on everyone, 24/7/365, and will also probably necessitate the total write-off of the ship to Princess Lines as a permanently colonized Plague Ship.

It is a near-certainty that no maritime insurer will ever cover it to set sail again, even if they burned it out from stem to stern. (Would you sail on it, or drink the water from the pipes? Sh'yeah, like hell you would.)

At the end of the day, the line, plus the Japanese government, will be liable for billion$ in damages from survivors and heirs' estates, for literally killing people, but given Japanese history regarding the Rape Of Nanking, that shouldn't be too troubling to leadership in Tokyo. More like reliving the good old days of the Greater East Asia Co-Prosperity Sphere.

Basic humanity would dictate that they move people off the ship into individual quarantine tents in the adjacent parking lot, and strictly segregate all their functions, including food and toileting. Doing it like they're doing is going to kill greater numbers, needlessly, who were initially uninfected.

Including crew members.

This is ghoul practice, not quarantine, but it accords with the millennia-long eastern tradition of regarding individuals as less worthy than cattle.

If there were a war on, this would be a war crime. As it is, it's a crime against humanity. With which, yet again, the Japanese have some wee history of familiarity.