1. Planning Passages
(Mariners Education/Navigation)

... software can greatly simplify the process and ensure that nothing important is overlooked. A good passage planning software program will include great circle waypoint/distance calculators, tide and tidal ...

2. Navigational History
(Mariners Education/Navigation)

... for short distances, using the sun and stars. This early celestial navigation was problemmatic and often resulted in the navigator becoming lost. In the China Sea and Indian Ocean, a navigator could ...

3. Marine Navigation
(Mariners Education/Navigation)

... Hemisphere, and has a latitude of 0°. Latitude The latitude of a place on the earth's surface is the angular distance north or south of the [equator]. Latitude is usually expressed in degrees (marked ...