Werf Siebren (12 results)

Condition: As New. Unread book in perfect condition.

Condition: New.

Paperback. Condition: new. Paperback. Taking the height of the poleFor the sixteenth century navigator this meant finding your latitude. Five centuries ago, to the year, the first nautical handbooks on celestial navigation appeared in print with declination tables written for 1517-1520. They explained how you can find your position taking the height of the sun or the Pole Star. And which course to steer to find your port. These are techniques that have proven their value through the centuries. In this book Siebren van der Werf and Dick Huges revive this format for the modern sailor, who has a sextant and an accurate clock. There are modern declination tables for four years, 2017-2020, but which may also be used for at least twelve years, without significant loss of accuracy. Also tables that give the length of the day light period, the time between sunrise and sunset. They let you find your longitude, which in the sixteenth century was not really possible. And of course there is the "Regiment of the North Star" in a new and user-friendly version. The story of a Trans-Atlantic crossing of Dick Huges, where he used celestial navigation, at first out of necessity, later by passion, illustrates the procedures. Five centuries ago, celestial navigation guides explained how to find latitude using the sun or Pole Star. Siebren van der Werf and Dick Huges revive these techniques for modern sailors, with updated declination tables, daylight period data, and tools for finding longitude. Dick Huges Trans-Atlantic journey illustrates these methods. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Paperback. Condition: Brand New. 80 pages. 4.88x8.13x0.32 inches. In Stock.

Condition: New.

Condition: New.

Condition: New.

Condition: As New. Unread book in perfect condition.

Condition: New.

Paperback, 23 cm, 168 pp. Ills.: z/w en kleurenillustraties. Cond.: zeer goed / very good. ISBN: 9789065540805.

Condition: New. Siebren van der Werf (1942) is a retired physicist of the University of Groningen, The Netherlands. Besides sailing, his current interest and work is on the history of navigation and on refraction of light in the atmosphere and computer .

Paperback. Condition: new. Paperback. Taking the height of the poleFor the sixteenth century navigator this meant finding your latitude. Five centuries ago, to the year, the first nautical handbooks on celestial navigation appeared in print with declination tables written for 1517-1520. They explained how you can find your position taking the height of the sun or the Pole Star. And which course to steer to find your port. These are techniques that have proven their value through the centuries. In this book Siebren van der Werf and Dick Huges revive this format for the modern sailor, who has a sextant and an accurate clock. There are modern declination tables for four years, 2017-2020, but which may also be used for at least twelve years, without significant loss of accuracy. Also tables that give the length of the day light period, the time between sunrise and sunset. They let you find your longitude, which in the sixteenth century was not really possible. And of course there is the "Regiment of the North Star" in a new and user-friendly version. The story of a Trans-Atlantic crossing of Dick Huges, where he used celestial navigation, at first out of necessity, later by passion, illustrates the procedures. Five centuries ago, celestial navigation guides explained how to find latitude using the sun or Pole Star. Siebren van der Werf and Dick Huges revive these techniques for modern sailors, with updated declination tables, daylight period data, and tools for finding longitude. Dick Huges Trans-Atlantic journey illustrates these methods. Shipping may be from our Sydney, NSW warehouse or from our UK or US warehouse, depending on stock availability.…