单选题Manila lines in which the strands are right-hand laid（）.A should be coiled in a clockwise directionB should be coiled in a counterclockwise directionC may be coiled either clockwise or counterclockwiseD should never be coiled

Off hire is when a vessel breaks down，strands，or has any damage that prevents the working of cargo or delays the sailing of the vessel．Under which of the following charter parties is off hire most likely to be mentioned？ ______.

A.Bareboat

B.Voyage

C.Time

D.Lease

In order to detect rot in manila lines, you should ______.

A.feel the surface of the line for broken fibers

B.measure the reduction in circumference of the line

C.observe any mildew on the outer surface

D.open the strands and examine the inner fibers

Roundline is a ______.

A.four-stranded, left- or right-handed line

B.three-stranded, right-handed line

C.three-stranded, left-handed line

D.small tarred hempline of three strands laid left-handed

Mooring lines should be turned end-for-end occasionally. This is because ______.

A.a line is weakened by constantly pulling on it in one direction

B.normal wear on the line is thus distributed to different areas

C.it prevents the line from kinking or unlaying

D.it prevents permanent misalignment of the line’s internal strands

A mooring line is described as being 6x24, 1-3/4 inch wire rope. What do the above numbers refer to ? ______.

A.Strands, yarns, circumference

B.Strands, wires, diameter

C.Wires, yarns, diameter

D.Strands, circumference, wires

Manila lines in which the strands are right-hand laid ______.

A.should be coiled in a clockwise direction

B.should be coiled in a counterclockwise direction

C.may be coiled either clockwise or counterclockwise

D.should never be coiled

Lines on a chart which connect points of equal magnetic variation are called ______.

A.magnetic latitudes

B.magnetic declinations

C.dip

D.isogonic lines