The height of coamings of hatchway above the exposed freeboard deck shall be at least（）。

A.An automatic or manual fixed extinguishing system tested to an appropriate standardacceptable to the Organization
B.Controls for manual operation of the fire-extinguishing system which are clearlylabeled for ready use by the crew
C.Arrangements for automatically shutting off the electrical power upon activation of thefire-extinguishing system
D.an alarm for indicating operation of the fire-extinguishing system in the galley wherethe equipment is installed

A.IMO号码
B.呼号（callletter）
C.船名
D.无需任何更改

A.单舷
B.两舷
C.前部
D.后部