17. The difference between magnetic heading and compass heading is called ________. (A) deviation (B) variation (C) compass error (D) drift

5. The ship’s “Displacement” means: (A) The total space tonnage of the ship, including the light ship, ballast water and cargo weight. (B) The total weight of the ship, including the light ship, ballast water and cargo weight. (C) The figure of the enclosed space of ship, which is divided by 100 cubical feet, excluded the space of cabin, engine room, bridge and that is unable for commercial purpose. (D) The figure of the enclosed space of ship, which is divided by 100 cubical feet, included the space of cabin, engine room, bridge and cargo holds.

17. The difference between magnetic heading and compass heading is called ________.
(A) deviation
(B) variation
(C) compass error
(D) drift

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