单项选择题
In a married falls rig at the after end of a hatch，a boom is rigged in a fore and aft line through its heel.Stresses on the outboard guy will be LEAST if the guy is made fast at a point（）.
A.Abreast the heel B.At right angles to the boom when viewed from above C.Aft of the heel D.Forward of the spiderband
单项选择题 Flanking rudders effect a vessel’s heading because of the（）.
单项选择题 Cribbing is（）.
单项选择题 At least（）radar transponder shall be carried on each side of every cargo ship of 500 gross tonnage and upwards.
