Diagram of a wiredrag navigation survey. This technique involved two vessels moving parrallel in the same direction dragging a wire at a preset depth. If the wire encountered an obstruction, the wire would come taut and form a "V.”
With the NOAA 200th Celebration coming to a close at the end of 2007, maintenance of this Web site ceased. Updates to the site are no longer being made.
Diagram of a wiredrag navigation survey. This technique involved two vessels moving parrallel in the same direction dragging a wire at a preset depth. If the wire encountered an obstruction, the wire would come taut and form a "V.”