单项选择题
A.the SOLAS Convention
B.the MARPOL Convention
C.the STCW Convention
D.the LIAD LINE Convention
单项选择题 Is considered to be one of the detainable deficiencies under the STCW Convention（）.
单项选择题 All of the followings are the detainable deficiencies under the SOLAS Convention expert（）.
单项选择题 The depth of the ship below waterline measured vertically to the lowest part of the hull is called （）.