{{short description|15th-century map created by Andrea Bianco}} thumb|250px|The '''Bianco map''' (1436)
The '''Bianco World Map''' is a map created by ''Andrea Bianco'', a 15th-century Venetian sailor and cartographer who resided on Chios. This map was a large piece of a nautical atlas including ten pages made of vellum (each measuring 26 × 38 cm). These vellum pages were previously held in an 18th-century binding, but the current owner, Venetian library Biblioteca Marciana, separated the pages for individual exhibition.
To confirm his authorship of the atlas, Bianco added to the first page a signature flag with the text "Andreas Biancho de Veneciis me fecit M cccc xxx vj". Roughly translated, this reads "Made by me Andreas Biancho in Venice, 1436."
Andrea Bianco also collaborated with Fra Mauro on the Fra Mauro world map of 1459.
==Content== The first page, or ''Tavola 1'', shows a diagram of the ''Raxon or Toleta of Marteloio'', a navigational technique that enabled sailors to calculate how to return to their intended course after being blown off-course. The next eight pages contain seven local and one Europe-wide Portolan charts. The ninth page contains a circular world map measuring 24 cm in circumference. The final page illustrates a Ptolemaic world map based upon Ptolemy's first projection with a graduation of the latitudes. The map also contains two different estimates of the size of the world sphere.<ref>{{Cite web|url=http://geoweb.venezia.sbn.it|title=Geoweb :: Biblioteca Nazionale Marciana - Venezia. Pagina di benvenuto|last=Venezia|first=Biblioteca Nazionale Marciana di|website=geoweb.venezia.sbn.it|language=it|access-date=2018-09-30}}</ref>
==See also== *Ancient world maps
==Further reading== * "Atlante nautico (1436)".(1993) edited by Piero Falchetta, Arsenale Editrice srl, Venezia. {{ISBN|88-7743-135-0}} This book is a special edition for the Banco San Marco and was a limited edition of 1500 copies. The Biblioteca Marciana has made the text and 10 Tavola's available as [http://geoweb.venezia.sbn.it ARCHIweb-Risultati Ricerca::Family 029110].
==References== {{reflist}}
Category:Historic maps of the world Category:1436 works Category:15th-century maps and globes Category:15th century in the Republic of Venice