I thought the episode last night was the best one yet.
How long after the outbreak is the story? It seems like it is to early for these people in the other boat to be this ruthless.
I think it has to be 2 or 3 months. The outbreak happened then they were quarantined by the military for a month or more, and now on the boat for week or two.
That should be plenty of time for this to start happening after all hell broke loose.