The Haven-finding Art: A History of Navigation from Odysseus to Captain CookHollis and Carter for the Institute of Navigation, 1971 - 310 ページ |
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... latitude of B. An error is introduced by treating what is in fact a spherical triangle as a plane Euclidean right - angled triangle . But , as the initial errors ( save in very few cases ) of latitude and distance must have been ...
... latitude of B. An error is introduced by treating what is in fact a spherical triangle as a plane Euclidean right - angled triangle . But , as the initial errors ( save in very few cases ) of latitude and distance must have been ...
222 ページ
... latitude intolerable . ' In our charts for S. Nicholas and Narve ' ( he says ) , the coasts are described by the common sailing compass ' with consideration of the variations at divers places , whereby the true meridians , reformedly ...
... latitude intolerable . ' In our charts for S. Nicholas and Narve ' ( he says ) , the coasts are described by the common sailing compass ' with consideration of the variations at divers places , whereby the true meridians , reformedly ...
229 ページ
... latitude , which he terms sufficient for seamen's use . For example : The longitude and latitude of two places being given , to find the rhumb : ' As the difference of latitude to the difference of longitude So the cosine of the middle ...
... latitude , which he terms sufficient for seamen's use . For example : The longitude and latitude of two places being given , to find the rhumb : ' As the difference of latitude to the difference of longitude So the cosine of the middle ...
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actually altitude angle appears Arab astrolabe astronomers azimuth bearings called Cape century chart-makers chih Chinese circle clock coast correct course course sailed cross-staff degree Dicuil difference distance drawn east east-west eight English equator error example fact fathoms French Gemma Frisius Greek Greenland Gulf harbour Hariot horizon Hvitserk Iceland India instrument instrument-maker island Jean Rotz John Dee king land later latitude leagues lodestone longitude magnetic compass magnetic needle mariners master mathematical measure Mediterranean Mediterranean Sea meridian method miles minutes monsoon Moon nautical navigation night north-east north-west Nuñez observations ocean Odysseus pilots Plate Pole Star port Portuguese position Pytheas quadrant quarter reckoning rhumb rhumb lines rock round rutter sailing directions sailors scale seaman ship ship's shore sight south-east south-west Strabo tide tion turned variation voyage William Borough wind wind-rose writing