Corrected entry: When the alarm sounds that a iceberg is ahead and the officer orders a hard turn to avoid the iceberg, the crew steers hard to the left. However when he reverses the screw [propeller] the underwater footage shows the right screw coming to a stop and then reversing. This would make the ship try to steer to the right by the right screw pushing water forward. thus cancelling out or limiting the effect of the rudder steering left. The left screw would need to be reversed to aid this left turn.
23rd Mar 2012
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