A.prevent the boom from being raised too high
B.prevent the boom from swinging
C.support the boom when not in use
D.prevent the boom from being lowered
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A.the three month period immediately following the certificate's anniversary date
B.the three month period immediately preceding the certificate's anniversary date
C.three months either way of the certificate's anniversary date
D.the three month period centered on the certificate's anniversary date
A.holding angle
B.fleet angle
C.fluke angle
D.shank angle
A.burial angle
B.penetration angle
C.fluke angle
D.holding angle
A.bower anchors
B.kedge anchors
C.spare anchors
D.stream anchors
A.relayed
B.delayed
C.conveyed
D.surveyed
最新試題
Periodic surveys to renew the load line assignment for a ship must be made at intervals not exceeding（）.
In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead（）.
The end of the joint with the exterior threads is called the（）.
The boom stops are installed on an offshore crane to（）.
Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.
Before welding in a tank that has carried petroleum products，the tank must be certified by （）.
Please arrange the survey（）early．
The document on a vessel，annually endorsed by an American Bureau of Shipping surveyor，is called the（）.
Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.
The smallest size of flaw that can be detected on a radiograph examination of a weld will be indicated by the（）.