Depression contour line
please be more specific
Different kinds of radar are
The Global Positioning System, or GPS, is a network of Satellites used for accurate navigation of ships and aircraft.
they are used for navigating ships and cars within 15 to 20 miles
WWI- Horses & carriages, motorcycles, cars & trucks, tanks, airplanes, ships WWII- Motorcycles, cars & trucks-I believe the Jeep was first used in WWII, "half-tracks" tanks, airplanes, ships, submarines
The Navigation Laws said that goods carried to and from the Colonies had to be carried on English ships. This prompted English ships to be used for the taking of goods much like the pirates did.
They are airplanes, trains, and boats/ ships.
The use of GPS in guiding airplanes has been proved beneficial to the aviation ... accuracy to that level which the ground based equipment can not do that. ...
Depending on the time period, they used trains over land, and ships over water.
The Development of the internal combustion: used in vehicles: cars, trucks, ships, airplanes, etc.
A lock is the mechanism for raising and lowering ships in a river that has rapids or waterfalls. Locks are used to make navigation an easier task.
The traverse board is a memory aid tool formerly used in dead reckoning navigation to easily record the speeds and directions sailed during a watch.Devices similar to traverse boards are still used aboard ships for situations when the modern navigation systems fail and dead reckoning navigation is needed.