Yep, it's the North Sea, alright.
And how many wind farms and oil rigs are out there? Some one has to work and maintain them.
I dont have an image host but snuffing the nose of my navy ship, the St Louis LKA-116 happened often and the foxail was 80’ of the water!!
https://upload.wikimedia.org/wikipedia/commons/3/3d/USS_St_Louis_%28LKA-116%29_underway_1976.jpg