Something even easier that requires no math or any devices other than the Garmin GPSr:
Mark a position along the beach and save as waypoint (A).
Standing at waypoint (A), use Sight 'N Go to project a waypoint in the direction of the oil rig, selecting a distance that is clearly well beyond the oil rig. Save as waypoint (B).
Move down the beach as far a distance as possible, and save as waypoint (C).
Standing at waypoint (C), use Sight 'N Go to project a waypoint in the direction of the oil rig, selecting a distance that is clearly well beyond the oil rig. Save as waypoint (D).
Now, open the Route Manager application and select Create Route. Create a Route starting at waypoint (A), to waypoint (B), to waypoint (C), and finally finish at waypoint (D).
View the selected route on the Map screen of your Garmin GPSr, and zoom in where the route crosses over itself (near the center).
Mark a new waypoint (E) at this intersection.
Waypoint (E) is the approximate location of the oil rig.
Do I win a prize?![]()
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