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Can you tell where you are at sea?  These two pictures were taken 3000 miles apart.  Can you tell where each one was taken? 

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How do you find your way around?  Maps?  A GPS?  Do you ask directions?  At sea, it is very hard to tell where you are.  One place looks very much like the next.  Try the exercise at left to see for yourself.


How do you think Columbus found his way back from the Caribbean without maps, a GPS or anyone to ask?  Find out by clicking through this interactive feature.  Lets see how technology has changed over the centuries.

Would you like to learn more?  Click here for an interactive feature on navigation during Columbus' life and the lives of the early explorers.