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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222 ページ
... plain chart , by which , as every critic agreed , a correct course could not be laid down . Mercator's map devised ' for sailors ' was of course known , but William Borough ( for example ) found its unequal spacing of the lines of ...
... plain chart , by which , as every critic agreed , a correct course could not be laid down . Mercator's map devised ' for sailors ' was of course known , but William Borough ( for example ) found its unequal spacing of the lines of ...
223 ページ
... plain chart's parallel lines of longitude . This would make all angles ( i.e. rhumbs ) correct , and courses laid consequently true , while in any small area the scale in all directions would be the same . But this scale would differ ...
... plain chart's parallel lines of longitude . This would make all angles ( i.e. rhumbs ) correct , and courses laid consequently true , while in any small area the scale in all directions would be the same . But this scale would differ ...
225 ページ
... chart . The introduction of the ' true ' chart , which any chart - maker could now draw with the help of Wright's tables , was the most important advance in navigational technique since the Portuguese ... plain chart THE TRUE CHART 225.
... chart . The introduction of the ' true ' chart , which any chart - maker could now draw with the help of Wright's tables , was the most important advance in navigational technique since the Portuguese ... plain chart THE TRUE CHART 225.
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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