20. What is the vertical distance between forward masthead light and after masthead light for a vessel of 150 meters in length? (A) At least 3 meters. (B) At least 4.5 meters. (C) At least 5 meters. (D) At least 6 meters.

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.

20. What is the vertical distance between forward masthead light and after masthead light for a vessel of 150 meters in length?
(A) At least 3 meters.
(B) At least 4.5 meters.
(C) At least 5 meters.
(D) At least 6 meters.

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