單項選擇題

Which action（s）is/are included in crane operations（）.

A.Normal boom stowage and shutdown operations
B.Emergency shutdown operation
C.Removing booms from stowage
D.All of the above

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單項選擇題

What is a“Special Warning”（）.

A.An urgent message concerning a vessel in distress
B.A weather advisory about unusual meteorological or oceanographic phenomena hazardous to vessels
C.A broadcast disseminating an official government proclamation affecting shipping
D.A radio navigational warning concerning a particularly hazardous condition affecting navigation

單項選擇題

What form of ice is of land origin（）.

A.Shuga
B.Floe
C.Spicule
D.Bergy bit