Figure 4: Detail from a fair sheet (Izóla Marina) 
CARTOGRAPHIC PROCESSING 
Nautical charts can be produced in national or 
international (INT) version. For verification on 
production of INT charts, IHO has to be contacted 
and asked for an INT chart number according to the 
international scheme of nautical charts. These have 
to be produced in English and in accordance with 
IHO standards. Each country decides upon its own 
national chart scheme and chart numbering in 
accordance with its needs and possibilities. These 
can be in accordance with nationally recognized 
cartographic symbols and language. However, the 
current trend is for all national symbols to be the 
same as international ones. This is the reason that 
practically all nautical charts look alike. 
In May 1999 IGF completed the production of 
national chart of the Gulf of Koper. It is produced in 
accordance with IHO standards. The only 
difference is that it is in the Slovenian language 
(Karnicnik et al., 1999). The paper format of the 
chart is AO and covers the area of the Gulf of Koper 
between Strunjan and Lazaret at a scale 1:12 000 
(figure 5). It was produced with the help of modern 
cartographic technology and it is one of the first 
charts in the Mediterranean produced completely 
digitally on WGS 84 ellipsoid.