An abstract mural depicting the GPS-tracked movements of Brooklyn Navy Yard workers was unveiled Thursday.

Artist Paul Campbell asked 10 Navy Yard employees to track their steps all over the city for one day using smartphone apps, and then recorded their movements on a 66-foot-long wall on Flushing Avenue at Vanderbilt Avenue.

The mural shows the workers' routes using different colored lines that wriggle across the length of the wall, tangling with each other.