According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 12 knot service speed, must be able to meet the rudder movement requirements at which of the minimum vessel speeds listed below?（）<br>A:6 knots<br>B:7 knots<br>C:9 knots<br>D:12 knots

According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 12 knot service speed, must be able to meet the rudder movement requirements at which of the minimum vessel speeds listed below?（）
A:6 knots
B:7 knots
C:9 knots
D:12 knots

出自：海船船员证

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