context: The history of the ship is in line with human adventures. The first known boat was known in the Neolithic era, around 10,000 years ago. These early ships had a limited function: they could move on water, but only that. Mainly used for hunting and fishing. The oldest canoe that archaeologists have found is often made from coniferous tree trunks, using simple stone tools. To determine direction, in the past the ship sailed not far from the continent or land. But in accordance with the eventual development of the crew using the star as a navigation aid with aids in the form of a compass and astrolabe and maps. The invention of the hourglass by Arabs also helped navigation coupled with the discovery of the hour by John Harrison in the 17th century. The discovery of the telegraph by S.F.B Morse and radio by C. Marconi, moreover the use of radar and sonar discovered in the 20th century made the role of the navigator somewhat shifted. The unit speed of the ship is calculated by knots where 1 knot = 1.85200km / hour.
question: when was the first ship created?
answers.text: Neolithic era