the position of G, the ship's centre of gravity. If a weight w(ton) is transferred a distance d (feet) from one side of the ship to the other and thereby causes an angle of heel theta( e)degrees measured by means of a pendulum or otherwise, then Gm=wd/Atan 0(see Figure 2) For any particular condition, KB and BM can be calculated, GM is found by the inclining experiment, whence KG=KM-GM. It is simple to calcul ate the position of G for any other condition of loading From"Encyclopedia Britannica", Vol. 16, 1980) Technical Terms 1. equini uin 15. stable equilibrium稳定平衡 2. stability and trim稳性与纵倾 16. netural equilibrium中性平衡 3. floating upright 17. metacenter height稳心高 4. force of gravity重力 l8. righting level复原力臂 5. resultant合力 19. initial stability初稳性 6. center of buoyancy浮力 20. cross-curves of stability稳性横截曲线 7. couple力偶 21. flooding进水 8. magnitude数值(大小) 22. thrust推力 9. displacement排水量,位移,置换 23. keelblock龙骨墩 10. righting moment复原力矩 24. dry dock干船坞 1l. righting arm复原力臂 enter of floatation漂心 12. upsetting moment倾复力矩 26. Greek letter希腊字母 13. upsetting arm倾复力臂 27. inclining experiment倾斜试验 14. metacentre稳心 8. pendulum铅锤,摆 Additional Terms and expressions 1. lost buoyancy损失浮力 9. stability at large angles大倾角稳性 2. reserve buoyancy储备浮力 10. dynamical stability动稳性 3. locus of centers of buoyancy浮心轨迹1 damaged stability破舱稳性 4. Bonjean' s curves邦戎曲线 12. stability criterion numeral稳性衡准书 5.Ⅵ laso' s curves符拉索夫曲线 13. lever of form stability形状稳性臂 6. Firsov' s diagram菲尔索夫图谱 14. locus of metacenter稳心曲线 7. Simpson' s rules辛浦生法 15. angle of vanishing stability稳性消失角 8. trapezoidal rule梯形法 16. free surface correction自由液面修正 1. When the ship is at rest, these two forces are acting in same perpendicular line, and, in order for the ship to float in equilibrium, they must be exactly equal numerically as well as oppositethe position of G, the ship’s centre of gravity. If a weight w (ton) is transferred a distance d (feet) from one side of the ship to the other and thereby causes an angle of heel theta(θ) degrees, measured by means of a pendulum or otherwise, then GM=wd/△tanθ(see Figure 2). For any particular condition, KB and BM can be calculated, GM is found by the inclining experiment, whence KG=KM-GM. It is simple to calculate the position of G for any other condition of loading. (From “Encyclopedia Britannica”, Vo1. 16, 1980) Technical Terms 1. equilibrium 平衡 2. stability and trim 稳性与纵倾 3. floating upright 正浮 4. force of gravity 重力 5. resultant 合力 6. center of buoyancy 浮力 7. couple 力偶 8. magnitude 数值（大小） 9. displacement 排水量，位移，置换 10. righting moment 复原力矩 11. righting arm 复原力臂 12. upsetting moment 倾复力矩 13. upsetting arm 倾复力臂 14. metacentre 稳心 15. stable equilibrium 稳定平衡 16. netural equilibrium 中性平衡 17. metacenter height 稳心高 18. righting level 复原力臂 19. initial stability 初稳性 20. cross-curves of stability 稳性横截曲线 21. flooding 进水 22. thrust 推力 23. keelblock 龙骨墩 24. dry dock 干船坞 25. center of floatation 漂心 26. Greek letter 希腊字母 27. inclining experiment 倾斜试验 28. pendulum 铅锤，摆 Additional Terms and Expressions 1. lost buoyancy 损失浮力 2. reserve buoyancy 储备浮力 3. locus of centers of buoyancy 浮心轨迹 4. Bonjean’s curves 邦戎曲线 5. Vlasov’s curves 符拉索夫曲线 6. Firsov’s diagram 菲尔索夫图谱 7. Simpson’s rules 辛浦生法 8. trapezoidal rule 梯形法 9. stability at large angles 大倾角稳性 10. dynamical stability 动稳性 11. damaged stability 破舱稳性 12. stability criterion numeral 稳性衡准书 13. lever of form stability 形状稳性臂 14. locus of metacenters 稳心曲线 15. angle of vanishing stability 稳性消失角 16. free surface correction 自由液面修正 Notes to the Text 1. When the ship is at rest, these two forces are acting in same perpendicular line, and, in order for the ship to float in equilibrium, they must be exactly equal numerically as well as opposite in direction