# cargoreview - Ch.1 1 Stability by its definition can be...

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Ch.1 1. Stability by its definition can be considered… The tendency for a ship to return to an upright position. 2. Center of gravity by its definition can be considered… The centroid of the displaced volumne, and/or the resultant of all vertically downward forces of gravity. 3. Center of bouyancy by its definition can be considered… The centroid of the displaced volumne, and/or the resultant of all vertically upward forces of bouyancy. 4. Mathematically speaking, a couple requires… Two equal forces acting on a body in opposite directions and along parallel lines. 5. The coupl eformed by the center of bouyancy and the center of gravity form what is known as… Righting moment. 6. Righting arm is… A distance. 7. Another expression for height of transverse metacenter is… KM. 8. If KG is less than KM the ship would be considered to have… Stable equilibrium. 9. Calculate the moment created by a couple with a force of 5 tons which has an arm of 2.5 feet… 12.5 foot-tons. 10. A ship has a quick hard roll. The ship’s stability is… Large GM. 11. As a vessel inclines to 3 degrees, which of the following moves toward the low side? Assume inclination due to rolling… B. 12. Why can a righting arm be used alone as an indication of transverse stability? Displacement remains constant at all angles of heel. 13. If a vessel has a displacement of 15000 tons and a righting arm of 2 feet, what is the vessel’s righting moment if the ship has a GM of 3 feet? 30000 foot-tons. 14. A vessel’s displacement increases but its righting arm does not. What can be said about the vessel’s righting tendencies? Increase. 15. If a marble is placed on a level table, what type of equilibrium does it possess? Neutral. 16. Metacentric height method of expressing stability tendency is useful for… Small angles of inclination. 17. KB plus BM equals what? 1

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Height of metacenter. 18. KM minus KG equals what? Metacentric height. 19. KM can be obtained from… Hydrostatic curves, and/or a table in the ship’s stability booklet. 20. The product of displacement and GZ is… An indication of the vessel’s true stability, and/or righting moment. Ch.2 1. Which of the following quantities does the ship’s officer calculate in doing a transcerse stability problem to determine GM? KG 2. The point through which all the vertically downward forces of weight are considered to act is known as… The center of gravity. 3. The light ship condition is… A condition prior to loading cargo, fuel, water, and stores. 4. A moment is… Neither a weight nor a distance. 5. A seesaw will not balance. We wish to determine where to put the fulcrum in order to make it balance. Which of the following methods would you use? You are not allowed to change the distribution of weight. Revolve moments about one end of the seesaw only.
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