Upvote:1
From a Reddit comment by PodporuchikKJ:
I think it was the Azamara Pursuit. Not clear why she was heading south ( ahead of schedule and killing time?). She docked at a shipyard in Belfast on the 4th for a refit. http://www.bbc.com/news/uk-northern-ireland-43641616
Indeed, the look fits with the Azamara Pursuit info from the cruise company. It was, in fact, en-route to Belfast, which confuses me because it very much appeared to be heading south.