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206 BCE
The First Compass
The first compass was made in China during 206 BCE -
200 BCE
The First Map
The first map on Earth was created on 200 BCE -
700
Modernised Compass
The modern-day compass was created in the year 700 and magnetic needles replaced the old compass. Was believed to be made by the Chinese. -
Radios
The first Radio was created in Italy. -
Echo Sounder
The echo sounder was invented by Alexander Behm. Echo sounding is a device to determine depth and distance by soundwaves. -
GPS
The GPS was created when 22 satellites were built specifically for the purpose of sending position and coordinate data to ships at sea