Martín Cortés de Albacar

For other people named Martín Cortés, see Martín Cortés.

Commemorative plaque dedicated to Martín Cortés de Albacar on the town hall of Bujaraloz.

Martín Cortés de Albacar (1510–1582) was a Spanish cosmographer.^[1] In 1551 he published the standard navigitional textbook Arte de navigar (also known as Breve compendio)^[2]

Cortés was born in Bujaraloz, province of Zaragoza, Aragon. From 1530, in Cádiz, he taught cosmography and the art of navigation to pilots.

Arte of Navigation

Cortés' book, Breve compendio,...Arte de navigar was promoted by Steven Borough who had it translated into English by Richard Eden and published in 1561 entitled The Arte of Navigation. As such it became the first English manual of navigation^[3] and the primary text for European navigation throughout the early 17thC, enjoyed by such as Martin Frobisher and Francis Drake.^[1]

Arte de navigar was a practical book in which Cortés discussed, in a concise manner, navigation, cosmography and problems such as magnetic declination for which he hypothesised a Celestial magnetic pole.^[1]

He included many illustrations and models for making instruments.^[4] and the text contained the earliest known description of the Nocturnal^[5] and how to make and use a sea astrolabe^[6][7]

Cortés' calculations were critical in allowing explorers to ascertain their location when out of sight of land.^[4]

In 1574, the mathematican, William Bourne, produced a popular version of the book, entitled A Regiment for the Sea. Bourne was critical of some aspects of Arte de Navegar and produced a manual of more practical use to the seaman.^[8]

He died aged 72.

References

1. ^ ^{a b c} p131 Antonio Barrera-Osorio Experiencing nature: the Spanish American empire and the early scientific revolution; University of Texas Press, 2006
2. ^ Breve compendio de la sphera y de la arte de navegar, con nuevos instrumentos y reglas, exemplificado com muy subtiles demostraciones
3. ^ Andrew Hadfield, ‘Eden, Richard (c.1520–1576)’, Oxford Dictionary of National Biography, Oxford University Press, Sept 2004
4. ^ ^{a b} Antonio Barrera, Colgate University, Navigational Manual of Cortés
5. ^ Harriet Wynter and Anthony Turner, Scientific Instruments, Studio Vista, 1975, ISBN 0-289-70403-0
6. ^ See es:Martín Cortés de Albacar for the Spanish Wikipedia biography
7. ^ Swanick, Lois Ann. An Analysis Of Navigational Instruments In The Age Of Exploration: 15th Century To Mid-17th century, MA Thesis, Texas A&M University, December, 2005
8. ^ G. L'E. Turner, ‘Bourne, William (c.1535–1582)’, Oxford Dictionary of National Biography, Oxford University Press, 2004

Persondata
Name	Cortes De Albacar, Martin
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Date of birth	1510
Place of birth
Date of death	1582
Place of death