OSNAP is deployed across the subpolar North Atlantic

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In the summer of 2014 an array of around sixty moorings, supplemented by gliders and floats, was laid from the Labrador shelf to Greenland and from Greenland to Scotland, to measure overturning north of the RAPID line and close to where the sinking actually happens. The design deliberately separated a western section spanning the Labrador Sea from an eastern section spanning the Irminger and Iceland basins and the Rockall Trough.

A node is not a place. Drawing it on a map would assert something about the world that no stored fact supports.