1.1 Ships passing through or proceeding to and
from ports and anchorages in the BELTREP area are required to participate
in the ship reporting system as follows:
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1.1.1 ships with a gross tonnage of 50 and above;
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1.1.2 all ships with an air draught of 15 m or
more; and
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1.1.3 pleasure craft with a length less than 15
m or with a gross tonnage less than 50 are exempted from participation.