The first ships we came to as we entered Oban harbour...
... had some seriously heavy lifting gear on board.
These fine vessels were the Northern Lighthouse Board ships NLV Pharos and NLV Pole Star. They are designed for maintaining lighthouses and navigation buoys and can accurately hold position while laying moorings for buoys.
We often see Pharos and Pole Star on our trips...
...but apart from this time in Oban harbour, I doubt they have ever seen us!