But although maps go back to the Greeks of Alexandria, it is not until the thirteenth century (in 1270), that there is specific reference to the use of a sea-chart.
Kodwa nangona izibonokalisi zendlela zendawo zabuyela umva kumaGrike aseAlexandria, yayingeyiyo lonto kwade kwaba ngamashumi mathathu enkulugwane (ngonyaka wekhulu lewaka linamakhulu mabini anamashumi asixhenxe) kubekho echaza eyona icacileleyo indlela, enokuthi isetyenziswe elwandle ize ibeyi itshati.