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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... instrument from an astronomer's standpoint . Nor was it free , of course , from all the inconvenience and errors which arose from the motion of the ship . This last disadvantage was dramatically overcome by a new octant displayed to the ...
... instrument from an astronomer's standpoint . Nor was it free , of course , from all the inconvenience and errors which arose from the motion of the ship . This last disadvantage was dramatically overcome by a new octant displayed to the ...
257 ページ
... instrument was in the possession of the instrument - maker , Thomas Heath , and had been exhibited in his shop window , per- haps before the paper was found . In 1739 a pamphlet was published in France called Le Nouveau Quartier Anglois ...
... instrument was in the possession of the instrument - maker , Thomas Heath , and had been exhibited in his shop window , per- haps before the paper was found . In 1739 a pamphlet was published in France called Le Nouveau Quartier Anglois ...
258 ページ
... Instrument commonly used for that purpose . ' In this instrument prisms were substituted for mirrors , but as it proved none was so simple and convenient in use as Hadley's . A French observer , writing in 1755 , said he had seen fifty ...
... Instrument commonly used for that purpose . ' In this instrument prisms were substituted for mirrors , but as it proved none was so simple and convenient in use as Hadley's . A French observer , writing in 1755 , said he had seen fifty ...
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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