That article fills in a lot of blanks for me:
"Over the weekend, MV Ruby was also denied access to the Strait of Denmark, the entrance to the Baltic which would have allowed it to offload its dangerous cargo at a Russian port.
According to Danish news reports, on Friday a pilot was to be allocated the following day, but when the time came, authorities appeared to have changed tack.
'The ship is not going to have a pilot tonight, and the latest I’ve heard is that it’s in Norwegian waters,' DanPilot press officer Anne Heinze told DR Nyheder over the weekend.
Instead, MV Ruby is apparently making its way toward the Channel, with Malta-flagged anchor handler Amber II maintaining a distance of around one kilometre...
Though the vessel was able to limp some 1,600km around the Norwegian coast, it now faces a fraught voyage through the Channel, past Spain and the Strait of Gibraltar and onward to Malta through two of the world’s busiest shipping lanes.
And there are few good choices ahead for the vessel’s crew: should MV Ruby sink, the cargo will likely cause enormous environmental damage, including algal blooms which choke swathes of ocean life, and could lead to a shipping exclusion zone to contain the spread of pollution."