單項選擇題A chart with a scale of 1:80,000 would fall into the category of a().

A.sailing chart
B.general chart
C.coastal chart
D.harbor chart


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1.單項選擇題A chart with a natural scale of 1:160,000 is classified as a().

A.sailing chart
B.general chart
C.coast chart
D.harbor chart

2.單項選擇題A chart projection depicting the poles and a small area on either side of a connecting meridian,that is sometimes used for star charts,is the().

A.azimuthal gnomonic projection
B.Lambert conformal projection
C.transverse Mercator projection
D.polyconic projection

3.單項選擇題A chart position enclosed by a square is a(n)().

A.fix
B.estimated position
C.dead reckoning position
D.running fix

4.單項選擇題A change of a documented vessel’s name can only be made by the().

A.American Bureau of Shipping
B.Commissioner of Customs
C.Treasury Department
D.Coast Guard

5.單項選擇題A chain bridle is used when towing astern because it().

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