Third Largest in the World

Over this weekend there has been a strange vessel visiting the Firth of Forth.  I have had to use a long telephoto as it is 10 miles away.

Apparently it is the world's third largest semi-submersible crane vessel, the 'Saipem 7000'.

Wikipedia has a lot of interesting facts about it if you are  interested in that sort of thing.
https://en.wikipedia.org/wiki/Saipem_7000

It departed earlier this evening just as it got dark.