All GIS layers are in Shapefile format (GIS software required).
![]() | GIS LAYER FROM FIGURE 1.4 |
Sheet layout of the International Map of the World – 4° × 6° grid, with sheet numbers | |
William Rankin Creative Commons BY-NC-SA | |
![]() | GIS LAYER SIMILAR TO FIGURE 3.13 |
Zones of the US State Plane Coordinate System | |
data from ESRI | |
![]() ![]() | GIS LAYERS FROM FIGURES 4.1 AND 4.11 |
Grid lines of the Universal Transverse Mercator system – grid zones and 100-km grid, with Military Grid Reference System info | |
data from the US National Geospatial-Intelligence Agency | |
![]() | GIS LAYERS FROM FIGURE 5.11 |
Loran during World War II – transmitter locations and chain connections (see image for coverage extent) | |
data from J. A. Pierce, A. A. McKenzie, and R. H. Woodward, eds., Loran: Long Range Navigation (New York: McGraw Hill, 1948), appendix B | |
![]() | GIS LAYERS FROM FIGURE 5.24 |
Loran-A after World War II – transmitter locations and chain connections (see image for coverage extent) | |
data from loran-history.info and “Loran-A is Alive and Well... and Living in China,” Wild Goose Association Radionavigation Journal (1985–1986): 47 | |
![]() | GIS LAYERS FROM FIGURE 5.25 |
Loran-C – transmitter locations and chain connections (see image for coverage extent) | |
data from loran-history.info, Wikipedia (including Soviet Chayka), and “Suez Canal Loran-C Installed,” Wild Goose Association Newsletter (Summer 1982): 5−6 | |
![]() | GIS LAYERS FROM FIGURE 5.23 |
Decca Navigator – transmitter locations and chain connections (see image for coverage extent and Dectra tracks) | |
data from Jerry Proc; for approximate locations of nuclear-test stations in the Pacific, see “Operation Grapple,” Decca Navigator News 21 (Dec 1957): 6–7 | |
![]() | GIS LAYER FROM FIGURE 6.7 |
Omega transmitter locations – final stations only | |
data from Peter B. Morris et al., Omega Navigation System Course Book, Vol. 1 (Alexandria: US Department of Transportation, 1994), pages 2-11 to 2-21 | |
![]() | GIS LAYERS FROM FIGURE 6.18 |
Differential GPS beacons (approximate coverage shown with 200-nm buffers) | |
data from Alan Gale's DGPS Beacons of the World (use Ctrl-F to find it on this page) |