Fladen Grounds is the next more northern, eastern and deeper part of the sea.
The Dutch weather service KNMI, and Norwegian equivalent, use their tongues' similar names for and meaning Fladen Grounds instead of Forties and most of Viking.
On a traditional imperial measurements nautical chart, a great zone with many "40"s appears.
[1] The initial development plan included a "complete replacement seawater injection system" starting in 1975.
[2] When the field was sold in 2003, reservoir engineers estimated the STOIIP (original oil in place) was 4.2 billion barrels (0.67 cubic kilometres).