6.用以分隔上下二組旗號時所使用的繩索稱為間索，其長度約為多少公尺？ (A)1 (B)2 (C)3 (D)4

11.When two power-driven vessels are meeting on reciprocal or near reciprocal courses, so as to involve risk of collision, which action is the best and correct? (A)The big ship shall stop her engine. (B)The small ship shall stop her engine. (C)Each shall alter her course to starboard. (D)Each shall alter her course to port.