Cargo Test 1 - Chapter 1 Questions 1 Stability by its definition can be considered the tendency for the ship to return to an upright position 2

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Chapter 1 Questions 1. Stability by its definition can be considered: the tendency for the ship to return to an upright position. 2. Center of gravity by its definition can be considered: the resultant of all vertically downward forces of gravity 3. Center of buoyancy by its definition can be considered: either the centroid of the displaced volume or the resultant of all vertically upward forces of buoyancy. 4. Mathematically speaking a couple requires : two equal forces acting on a body in opposite directions and along parallel lines. 5. The couple formed by the center of buoyancy 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. (Δ * GZ = 5 * 2.5) = 12.5 ft. tons 10. A ship has a quick hard roll. The ship’s stability is: large GM. 11. As a vessel inclines to 3° 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 angels of heel. 13. If a vessel has a displacement of 15,000 tons and a righting arm of 2 feet, what is the vessel’s righting moment if the ship has a GM of 3 feet? (15,000 * 2)= 30,000 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? Height of metacenter . 18. KM minus KG equals what? Metacentric height. 19. KM can be obtained from: either hydrostatic curves or a table in the ship’s stability booklet. 20. The product of displacement and GZ is: either an indication of the vessel’s true stability or righting moment. Chapter 2 Questions 1. Which of the following quantities does the ship’s officer calculate in doing a transverse 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 it: 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
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are not allowed to change the distribution of weight. Revolve moments about one end of the seesaw only. 6.
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This note was uploaded on 04/25/2008 for the course DECK dn220 taught by Professor Lutz during the Spring '08 term at United States Merchant Marine Academy.

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Cargo Test 1 - Chapter 1 Questions 1 Stability by its definition can be considered the tendency for the ship to return to an upright position 2

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