1. 1. Ship maneuvering CHAPTER 3: THEORIES OF SHIP MANEUVERING (SHIP INTERACTIONS) CAPTAIN TANAMESH PUSANASURAPUNT
2. 2. Fixed Screw Propeller
3. 3. Single Fixed Screw Propeller
4. 4. Larger Ship
5. 5. Ship-Handling with 4 Tugs
6. 6. Berthing with 5 Tugs
7. 7. Ship-Handling with 4 Tugs
8. 8. 0900 - 1200
9. 9. Daniel Bernoulli
10. 10. 2 + gz + p = Constant 2 v: Fluid Flow Speed g: Acceleration due to gravity z: Elevation of Point Above Reference Plane p: Pressure : Density of Fluid Bernoullis Principles Bernoullis Equation For Uncompressed Flow (Fluid)
11. 11. Bernoullis Equation For Uncompressed Flow (Fluid)
12. 12. + 2 + p + gz = F(t) 2 : Partial Differentiation of Velocity at Time t g : Acceleration due to gravity z : Elevation of Point Above Reference Plane p : Pressure : Density Bernoullis Principles Bernoullis Differential Equation For Compressed/ Unsteady Flow (Gases)
13. 13. Bernoullis Differential Equation For Compressed/ Unsteady Flow (Gases)
14. 14. Aerodynamic
15. 15. COASTAL AREA WHERE SHIP INTERACTIONS OFTEN HAPPEN
16. 16. Shallow Water Effect Bank Effect Shallow Water Effect
17. 17. SHALLOW WATER EFFECT (SWE) CAPTAIN TANAMESH PUSANASURAPUNT
18. 18. Shallow Water Effects
19. 19. Shallow Water Effects
20. 20. Braer 1993 85
21. 21. BANK EFFECT (BE) CAPTAIN TANAMESH PUSANASURAPUNT
22. 22. Bank Effects
23. 23. Bank Effects SUCTION
24. 24. SPRING OUT THE BANK (Kicking Techniques) Kicking
25. 25. SQUAT (SQUAT) CAPTAIN TANAMESH PUSANASURAPUNT
26. 26. SQUAT (Keel)
27. 27. SQUAT (Keel)
28. 28. Squat SQUAT (Stern)
29. 29. POTENTIAL SQUAT (Stern)
30. 30. SQUAT (Bow)
31. 31. - - Wind POTENTIAL SQUAT (Bow)
32. 32. Squat is expected when depth < 1.5 draft Squat value should be greater of Value provided in maneuvering data 10 % of draft 0.3 m for every 5 knots Ship with CB greater than 0.75 tends to squat by head
33. 33. SQUAT
34. 34. Bernoulli's Principle Applications
35. 35. SHIP INTERACTION CAPTAIN TANAMESH PUSANASURAPUNT Positive Pressure (+) and Positive Pressure (+) => Push Apart Positive Pressure (+) and Negative Pressure (-) => Suction Negative Pressure (+) and Negative Pressure (-) => Suction
36. 36. SHIP PASSING CAPTAIN TANAMESH PUSANASURAPUNT
37. 37. Ships Passing
38. 38. SHIPS OVERTAKING CAPTAIN TANAMESH PUSANASURAPUNT
39. 39. Ships Overtaking
40. 40. Ships Overtaking
41. 41. Ships Overtaking
42. 42. Ships Overtaking
43. 43. TURNING AT THE BEND CAPTAIN TANAMESH PUSANASURAPUNT
44. 44. 1 Possibility : Keep Inside, With Right Rudder to Bow Straight Ahead If Aft closes to the bank, 2 Choices : Kicking Ahead, or Putting Sternway Potential Squat
45. 45. 1 Possibility : Keep Inside, With Right Rudder to Bow Straight Ahead If Aft closes to the bank, 2 Choices : Kicking Ahead, or Putting Sternway Potential Squat
46. 46. Keep inside of the Bend, Ship May Aground (Be careful the Opposite Turning Moment) Potential Squat
47. 47. ( ) 1 2 3 4
48. 48. ( ) 1 2 3
49. 49. THE END