"Portulans" are medieval nautical maps, provided with a wealth of geographical coastal names and conceived for being used by seafarers. Because they used to be frequently rolled up and constantly consulted aboard, the surviving “carte da navigar” are extremely rare and not always in good condition.
Portolano C.G.A.5.c is one of the most ancient documents of Portuguese nautical cartography. Anonymous and trimmed to 60 × 73 cm, it shows the Portuguese discoveries of African coasts after the explorations of Fernando Gomes in 1471-72. The emphasis on Lisbon and Ceuta and the flags signaling landing sites on African coasts allowed scholars to date the map between 1472 and 1482.
We have 3 facsimiles of the manuscript "Portulan C.G.A.5.c":
- Portolano C.G.A.5.c (map in tube) facsimile edition published by Il Bulino, edizioni d'arte, 2002
- Portolani (set of 3 maps in case, includes C.G.A.5.c) facsimile edition published by Il Bulino, edizioni d'arte, 2004
- Portolani (set of 3 maps in deluxe wooden case, includes C.G.A.5.c) facsimile edition published by Il Bulino, edizioni d'arte, 2004