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a. can use compass

b. They could rely on the stars for navigation

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i think for B they use a method called the celestial navigation

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a. using landmarks or compass
b. use compass or for now it's using the automatic identification system to display the real time location of the ships

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a) google maps
b) maps and compass

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A. Gyro Compass and Radar
B. Use Compass

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a. They use some sort of GPS to guide them.
b. A compass. Or more long time ago, people look at the positions of stars or star constellations to guide them instead.

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Kennard Nicholas A.Binoculars B.Use maps

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Kennard Nicholas A.Binoculars B.Use maps

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a. They use some sort of GPS to guide them.
b. A compass. Or long time ago, people use the positions of stars or star constellations to guide them instead.

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a. They look at the sun's movement( east to west)at day. At noon, they check the movement of shadows, or if its night, they check the movement of the stars.(This is very ancient, before compasses are invented.)
After compasses/maps are invented, they can use it to navigate.  Sailors tend to use hourglasses aswell, and They can also send signs

b. i think I said it on part a

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A. For the old way, people usually use star, but now people mostly use compass.
b. At the day, they use wind which can show you the north. But at the night, people use stars

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They were say help to person or they fixed them selve

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a. They use a sort of GPS or satellite navigations to guide them.

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A. If they lucky they can use black hole
or use GPS
B.

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a. Use compass. They can use maps too
b. In the old days, sailors watched stars to mark their position, but most of it uses compass to navigate. They can also probably find another ship and ask for help