Ship interactions online

download Ship interactions online

If you can't read please download the document

  • date post

    21-Aug-2015
  • Category

    Education

  • view

    16
  • download

    0

Embed Size (px)

Transcript of Ship interactions online

  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