A.Can be released while under strain
B.Is used for boat falls
C.Is used for extra heavy loads
D.Is used for light loads only
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A.Number of wires in the inner core
B.Number of strands per wire rope
C.Tensile strength of the wire
D.Number of wires per strand
A.fasten the bitter ends to the mooring line with half hitches
B.twist the ends together and hold them in the direction of the pull
C.twist the ends together and hold them in the direction opposite to the pull
D.twist the ends together and hold them at right angles to the mooring line
A.Is easy to connect
B.Provides an effective catenary and absorbs shock due to its weight
C.Makes rigging a swivel unnecessary
D.Prevents the tow from yawing by the drag of the chains in a seaway
A.double sized mattress consists of more than 890 coils
B.spar extending from a mast or a king post
C.flap（Becker rudder）can be fitted to the rudder’s trailing edge
D.bridle arrangement having a long beam of the length of the container
A.6 inches in diameter and 19 fathoms long
B.6 inches in circumference with 19 strands
C.6 strands with 19 wires in each strand
D.19 strands with 6 wires in each strand
最新試題
What type of line melts easiest（）.
Which lashing materials would be used in securing light vehicles aboard Ro-Ro vessels（）.
When securing a hook to the end of a wire rope you should use（）.
Which tensioning device is used with chain to secure heavy vehicles aboard Ro-Ro vessels（）.
The rope which is rove from the truck to be used with a bos’n chair is called a（）.
What is meant by the term two-blocked（）.
What is normally used to pass a mooring line to a dock（）.
When towing，what is the main reason for using a chain bridle on a wire hawser（）.
Which is standing rigging（）.
When a line is subject to wear where it passes through a mooring chock，it should be（）.