For a time a heliport operated to service oil and gas rigs in the North Sea.

Now our oil men are operating drilling rigs and gas wells in the North Sea.

J1 operated in patrols in the North Sea.

In the early 1980s these vessels set several lift records while operating in the North Sea.

White made two voyages to the Mediterranean, after which she was operating in the North Sea by 1809.

Shuttle tankers initially started operating in the North Sea.

In 1940 she was operating in the North Sea.

He eventually made six patrols in U-20, operating in the North Sea.

They operated in the North Sea and off Norway.

U-6 operated in the North Sea between 7 and 20 April 1915.