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TECHNOLOGY AND HISTORICAL CHANGES - Coggle Diagram
TECHNOLOGY AND HISTORICAL CHANGES
New ships called
Carvels
were built and later larger ships,
Carrack or Nao
were developed
New technology = long voyages across the Atlantic & Mediterranean were now possible.
Carvels
longer, bigger, stronger
Carry more masts (Sails)
Used
square and lateen sails.
Lateen sales could sail with and against the wind
Steered
using
rudders
had castles (raised structures) – spot enemies easier.
Technology for Navigation
Maps
Earliest maps - Portolan Charts showed
places along the coast joined by lines
New maps were then developed to show the whole world
Speed
Measured using a
log and line
(The line was tied to a log at the end of it and thrown out of the ship) and a
sand-glass
.
Speed was measured in
Knots
and still is
today
. (Knots were tied at equal distance along the line, speed measured by the time it took the knots on the line to pass through a sailor’s hand)
Compass
- direction
Latitude and Longitude
Longitude
- degrees East & West (from 18th century)
Latitude
- degrees North or South of equator. Used
astrolabes, quadrants and cross-staffs