The "discovery" of america - Coggle Diagram
The "discovery" of america
was a simple device that was esseential for ships to document their speed and direction when not all of the crewmembers could read or write.
it was like a computer or black box recording all of the movements
the magnetic compass and rose was a powerful navigational tool that sailors needed to sail uncharted waters.
the compass was developed in china back on the 11th century and assisted them during the years of the treasure fleet
This simple device consisted of a string and a pice of wood
It was used to estimate the vessels latitude.
One would hold the string close to them and then hold uot the pice of wood to be able to save the pole eros of the top of the wood with that tehey could then estimate the current latitude.
it was developed by the ELA Arabs in the 9th century
sailors depended on simple sand our glasses to measure time. but then on middle ages mechanical clocks, were created. :
the Sextant was used as the line beetween the horizon and the stars, and they could really see was they even while the sjip was moving up and down
this instrument measures angles much like other instrument of the time that would be used to calculate latitude.
Caravel & Ganglion
the caravel was created by the portugese in the 15th century.
this ship was highly maneuravle seaworthly cheap to build and could be utilized by numerous pourposes from being carrying cargo to being a warship to being just a fishing boat.
the gallion could serve as a cargo ship in peactme and then be outfitted to be a floating fortess during times of war.
It was developed in the 16th century
it was made to stand attacks for enemy ships.
it measures the high of the sunn and prominent stars to the horizon. Then alows for calculations to be made.
It was most likely invented by a greek adtronoment and mathematician. it wasnt used at sea until 1481