The Haven-finding Art: A History of Navigation from Odysseus to Captain Cook

actually altitude altura angle Arab astrolabe astronomers called Cape captain century chart-makers chronometer circle clock coast correct course course sailed cross-staff degree difference distance east east-west eight English Ephemerides equator equinoctial error example fact fathoms French Gemma Frisius Hariot horizon Iceland instrument instrument-maker island Jean Rotz John John Dee king land later latitude leagues lodestone longitude magnetic compass manual mariners master mathematical mathematicians measure Mediterranean Mediterranean Sea meridian method miles minutes Moon nautical navigation night north-east Nuñez observations ocean Odysseus pilots plain chart Plate Pole Star port Portuguese position Pytheas quadrant quarter reckoning rhumb rhumb lines right ascension Rotz round Royal rule rutter sailing directions sailors scale seaman ship ship's sight south-east south-west Strabo Sun's Thomas Hariot tide tion triangle turned variation voyage William Borough wind wind-rose writing