3.1 Under certain conditions as provided in Regulation 13(3) of Annex I of
MARPOL 73/78 to which paragraphs (7) and (10) of the same Regulation
refer, additional ballast may be carried. Before a decision is made
to take on additional heavy weather ballast other measures such as
reducing speed or altering course should always be considered.
3.2 If additional ballast has to be taken on board
this should, if possible, be carried in tanks which have been cleaned
for routine sediment control or maintenance. Ballasting of dirty tanks
should be avoided. The additional ballast is discharged as dirty ballast
in compliance with Regulation
9 of Annex I of MARPOL 73/78 and following the procedure described
in section 7 of the Manual The piping that will subsequently be used
for discharging ballast from the dedicated clean ballast tanks may
need to be flushed again by drawing some water from these tanks to
the slop tank.
3.3 In case the vessel during its ballast voyage
sails through special areas no discharge at sea of dirty ballast will
be possible in the area.