Propeller curve

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The propeller with perfect pitch/diameter ratio will be the one whose propeller power curve and engine HP curve meets at maximum RPM. Therefore, a propeller curve is a very much significance for chief engineer

Significance of propeller curve

  • Helps in identifying the overload operation area and act accordingly
  • Load diameter defines power and speed limits for continues as well as overload operation.
  • Point ‘M’ is 100% reference point of speed and power
  • C/E can analyse condition of Hull & Propeller.
  • MEP is in range or not.
  • Whether engine is operating in continuous operating area.
  • Area between 4 & 1 is available for operation in shallow water and heavy weather.