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. ...
The Development of the internal combustion: used in vehicles: cars, trucks, ships, airplanes, etc.
Depending on the time period, they used trains over land, and ships over water.
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.
Airplanes, ships, trucks, a small amount of animal transport, motorcycles, and leather personnel carriers.