S. Fisher, The Organisation of Hydrographic Information for English Navigators - Fivehundred years of sailing directions and charts, J NAVIG, 54(2), 2001, pp. 157-166
The paper outlines the changes in the physical form in which hydrographic i
nformation has reached the chart tables of ordinary navigators over the las
t five hundred years and traces its development from a purely verbal aid to
a graphic one.