A.Magnetic compass table
B.Magnetic meridians
C.Isogonic lines
D.Variation is not indicated on small-scale nautical charts
您可能感興趣的試卷
你可能感興趣的試題
A.accurate only in the Polar regions
B.accurate electronic servomechanisms
C.hand operated
D.accurate only if the vessel is underway
A.making a structural change to the vessel
B.a short circuit near the compass
C.belt buckles
D.All of the above
A.21-Aug-99
B.21-Sep-99
C.Octoer 31，1999
D.31-Dec-99
A.Flinders bar
B.transverse magnets
C.fore-and-aft magnets
D.soft iron spheres on the sides of the compass
A.true meridian and the axis of the compass card
B.true meridian and the magnetic meridian
C.magnetic meridian and the axis of the compass card
D.axis of the compass card and the degaussing meridian
最新試題
When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.
The heading of a vessel is indicated by what part of the compass? （）
Which one of the followings does not limit the effective range of radar（）.
The operation of which aids to navigation may be suspended during war or national emergency（）.
In using Loran-C，skywave reception gives greater range but is（）.
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
What does not contribute to the commercial GPS receiver position error（）.
With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.
Which statement concerning GPS is TRUE（）.
The line connecting the Loran-C master station with a secondary station is called the（）.