Hit the nail on the head! I was just reading Tugster and in the background of this wide-angle shot of the OSG Vision was this suspiciously familiar Horizon Lines box ship.
So I googled the name "Horizon Discovery" and her profile shot is very similar to the image from google maps. I think we nailed it.
They might be old rust buckets, and Horizon Lines might be a junky operation, but there's just something alluring about these ships' lines. Maybe I'm crazy but as box-boats go I think many of Horizon's old boats are far more attractive vessels than any old "Emma Maersk" or "APL Southampton"