12.下圖信號旗，係表示： (A)1 (B)3 (C)5 (D)9

9. A vessel constrained by her draught shall, when risk of collision with another vessel in a crossing or head-on situation exists, . (A)apply the relevant steering and sailing rule as a power-driven vessel. (B)apply the relevant steering and sailing rule as a sailing vessel. (C)apply the relevant steering and sailing rule as a vessel not under command. (D)apply the relevant steering and sailing rule as a vessel engaged in a towing operation.

12.下圖信號旗，係表示：
(A)1
(B)3
(C)5
(D)9

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