FENWICK IS OBSERVATION TWR 3
Spatial/elevation data
| Coordinates | N 38.50585° W 75.053866° |
| Elevation | Unknown |
| Location | Delaware
Sussex County Bethany Beach Quad |
Mark description
| Type | Landmark/Intersection Station |
| Setting | Concrete Tower |
| Monumented | 1962 by NGS |
| Description (NGS) | NGS Datasheet |
Narrative and photographs
The observation tower was found as described. Likely of interest to many benchmark hunters: from these towers, soldiers used the method of triangulation to determine the position of approaching vessels. For a detailed and extremely clear explanation of the process, see the following: (link removed because the page has disappeared and no suitable replacement can be found, 3/2011).