Derrotas de Galeones y Flotas 1782

" Derrotas que antiguamente practicaron los primeros galeones y flotas".Manuscript on laid paper dated on 1782, 36 x 24 cms .Title page,43 ff.Manuscript with marginal notes. Paper watermark dated 1748 WR. We can date this manuscript between 1748-82.Middle XIX century green  half leather binding.
Unknown manuscript that was probably not finished as we see some headings prepared for a drawing or illustration . The manuscript was signed afterward by the academic Francisco de Paula Cuadrado(1794-1873) with the date 18[ ] missing last two numbers. We have located a similar manuscript at the Madrid  Royal Palace collection  that describes Sevilla as the starting point of the fleets with the title: "Derrotas que antiguamente practicaron los primeros galeones y flotas a diversos puntos, a la Habana,Veracruz, de la Habana a las Azores y desde alli hasta Sevilla".
The chapters mention Cadiz as starting point for  the West Indies Fleets as Cadiz became  head of the American trade since 1717 because navigation up to Seville was interrupted due to sand banks in the Guadalquivil river that made impossible upstream navigation  .
The manuscript provides full description of the Caribbean waters, islands, Antilles, Barlovento islands,Martinica,Guadalupe,Granada,Granadilla,Santa Lucia,Santa Cruz,St Bartholome,St Martin,Antigua, Monserrate,Barbados,Los Alacranes,isla de Arenas, etc.The manuscript provides full account on navigation between Caribbean harbours so that it can be considered as a routier or pilot chart of the Caribbean sea. Manuscripts in spanish describing the trade routes and Caribbean navigation are of the utmost rarity.