Search results
Results From The WOW.Com Content Network
Medieval ships were the vessels used in Europe during the Middle Ages. Like ships from antiquity, they were moved by sails, oars, or a combination of the two. There was a large variety, mostly based on much older, conservative designs. Although wider and more frequent communications within Europe meant exposure to a variety of improvements ...
Cog (ship) A replica of the Bremen cog. A cog was a type of ship that was used during the Middle Ages, mostly for trade and transport but also in war. It first appeared in the 10th century, and was widely used from around the 12th century onward. Cogs were clinker-built, generally of oak. Cogs were fitted with a single mast and a single square ...
Quadrant (instrument) A large frame quadrant at the Beijing Ancient Observatory. It was constructed in 1673. A quadrant is an instrument used to measure angles up to 90°. Different versions of this instrument could be used to calculate various readings, such as longitude, latitude, and time of day. Its earliest recorded usage was in ancient ...
A half-circle protractor marked in degrees (180°). A protractor is a measuring instrument, typically made of transparent plastic or glass, for measuring angles. Some protractors are simple half-discs or full circles. More advanced protractors, such as the bevel protractor, have one or two swinging arms, which can be used to help measure the angle.
Mercator 1569 world map ( Nova et Aucta Orbis Terrae Descriptio ad Usum Navigantium Emendate Accommodata) showing latitudes 66°S to 80°N. The Mercator projection ( / mərˈkeɪtər /) is a conformal cylindrical map projection presented by Flemish geographer and cartographer Gerardus Mercator in 1569. It became the standard map projection for ...
The history of navigation, or the history of seafaring, is the art of directing vessels upon the open sea through the establishment of its position and course by means of traditional practice, geometry, astronomy, or special instruments. Many peoples have excelled as seafarers, prominent among them the Austronesians ( Islander Southeast Asians ...
Reconstruction (top) in 1:10 scale of a dromon's hull, at the Museum of Ancient Seafaring, Mainz. The appearance and evolution of medieval warships is a matter of debate and conjecture; until recently, no remains of an oared warship from either ancient or early medieval times had been found and information had to be gathered by analyzing literary evidence, crude artistic depictions and the ...
Long known to locals, the Maderö wreck was first visited by divers in 1969, who described it as a large medieval trading ship filled with bricks. In the decades since, other divers visited the ...