Multimedia Gallery
- Navigation Methods: Dead Reckoning
Lines of longitude are imaginary lines circling the globe through poles. Also called meridians, they are designated in degrees east of west of a starting reference line from 0° at the prime meridian to 180° on the opposite side of the globe.
Aircraft equipment interprets time delays from pairs of ground stations.
Lyre crab, Northwest coast (Maoidea, Hyas Lyratus, Chorilla Longpipes)
Map of Geographical Distribution of Plants and Animals for the U.S. Exploring Expedition
Map produced by the U.S. Exploring Expedition.
Map produced by the U.S. Exploring Expedition
The Mark 3 Plotting Board was used in single-seat aircraft flying in the Pacific.
The Mark IIB Pelorus drift sight was lighter than most drift sights, but required more work to use.
It was lighter than most drift sights, but required more work to use.
