I don't think the Corona Virus is as benign as a flu virus. Sure the mortality rate is 1% but that is what we know today. No one knows what this Virus is capable of, in terms of mutation etc, and it is because of these unknowns organisations and public officials are on alert and taking quarantining steps - rightly so.
It is foolhardy to undermine WHO's cause for concern.
I am sorry you are stuck on a ship and I do hope you get to disembark in Singapore.