Rags and his crew are still living on their ship, stranded off the coast of Boston since the day the bombs fell. He and his crew have since become ghouls and now defend their stranded ship from mirelurks and other Commonwealth threats. Neither he nor his crew speak English. They will immediately become hostile to the Sole Survivor and shout Norwegian phrases to them and each other.
Despite none of the crew speaking English, the terminals controlling their turrets are interfaced in English rather than Norwegian.
If he is still alive by the time the player character reaches Nuka-World, he may be involved in a random Under the Collar quest where he must be knocked out and collared.