Bids will be taken and opened for（）of contract at the offices of Messrs. Albright，Jenkins & Co.，the ship’s Agents，located in this city，on August 19，2007，at 9:00 A. M.

A partly submerged vessel or object being towed，which is not readily noticeable，shall show （） .

A.yellow lights at each end
B.two red lights in a vertical line
C.a black ball
D.a diamond shape

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A notice of readiness is not valid unless it indicates that the vessel is ready to load or discharge as the case may be，at the time（）it is given.

A.when
B.which
C.that
D.then

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