Environmental Engineering Reference
In-Depth Information
Fig. 6 Different considered options for the BWEA in the Adriatic Sea. The blue , black and
orange dotted lines show different options for the limits of BWEA considered for the Adriatic Sea.
The red line is a scale bar of 200 NM (After David 2007 )
Ballast Water Management Requirements Related to the Ballast
Water Exchange Area
The BWM Convention does not require ships to use a designated BWEA, because
it states that a “ship may conduct ballast water exchange”. Therefore, a port State has
to inform/require the vessels what to do and the BWM options should be specifi ed
considering advantages and weaknesses in light of effective environmental protection
and costs induced by such measures.
For the purpose of the Koper study, the BWM options were selected based on
the BWM DSS model (see chapter Ballast Water Management Decision Support
System ”), which is supported by the BWRA. This means that the BWM require-
ments are related to the result of the BWRA, i.e., when a higher level of risk from
ballast water to be discharged is identifi ed, more stringent requirements are con-
sidered, e.g., a vessel may need to deviate and/or slow down to fully complete
BWE of all ballast water intended for discharge, and vice versa when a low risk
is identifi ed.
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