For operations in pack ice，a vessel should（）.<br>A:be on an even keel<br>B:be trimmed slightly by the head<br>C:have a drag of not more than 60 - 90 centimeters<br>D:be ballasted so the forefoot is near the surface

For operations in pack ice，a vessel should（）.
A:be on an even keel
B:be trimmed slightly by the head
C:have a drag of not more than 60 - 90 centimeters
D:be ballasted so the forefoot is near the surface

出自：海船船员证

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