Modern ships navigate by use of GPS units and computers. In past times, mariners used visual aids like a sextant to navigate using the stars and sun.
from the wind
Navigate
Ships can navigate up the Mississippi River as far as Minneapolis, Minnesota, which is about 2,340 miles from the river's mouth at the Gulf of Mexico.
The santa maria
99
really easy
The Phoenicians used the sun and stars to navigate
In a couple of ships known as caravels.
Ships are built in shipyards. Shipyards are located in most large seaports so that when a ship is built it can safely navigate to sea.
Locks
Locks
The Compass