87
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ched
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ence
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ights
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atural
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Figure 6: Nautical chart Gulf of Koper (Izola Marina section)
QUALITY CONTROL
Quality control is very important in nautical
cartography. Any error on the chart could cause
great damage to vessels, environment and people.
For this reason the whole chart production process
was checked several times. This is also necessary
to meet the requirements of IHO standards and
high precision of data charted. The following quality
controls were conducted:
• participation of cartographer in the
hydrographic survey on board,
• crosscheck soundings lines according to IHO
specifications,
• checking of tide gauge readings with predicted
values,
• fair sheets were checked immediately after the
completion of survey,
• selection of soundings was checked by several
independent processes,
• cartographic procedures were sequentially
checked directly at IGF,
• transformations of coordinates were checked
with comparison to other maps and charts,
• light characteristics were checked by Slovenian
Port Authority,
• several test prints of the chart were made
before the final print,
• printing was supervised by cartographic
experts,
• several points on the field were checked with
precise (P-coded) GPS receiver in cooperation
with Navoceano.
CONCLUSION
The Gulf of Koper chart was presented at the
Mediterranean and Black Seas Hydrographic
Commission (MBSHC) in Split, Croatia. This first
Slovenian chart is a great step forward for the
safety of navigation in the Slovenian part of
Adriatic, but there is still a lot of work to do in this
field. Already planned are production of the INT
version of Gulf of Koper chart, both versions of the
Gulf of Piran chart (figure 5) and the Gulf of Trieste
chart in cooperation with the Italian and Croatian
hydrographic offices. A complete survey of Gulf of
Piran is planned for a future date. All data will be
processed for electronic navigation chart (ENC) and
included in the European distribution network
(Radovan, 1994-98). The Ministry of Transport and
Communications is very active in gaining full
membership of the IHO and in forming the maritime
law. This is all aimed towards full competence of
Slovenia in the international maritime society.