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Slip=100%-Efficiency
Efficiency=Observed Speed or Distance / Engine Speed or Distance
Mean Apparent Slip = Distance Run by Propeller - Distance Run by Ship / Distance Run by Propeller
Distance Run by Propeller = Picth X Total Engine Revolutions per day / 1852
I wish this can help those who are in need of this formula.
Rgds
Ahmad
Nannie Keeling
Wiki User
∙ 14y agoThe propeller slip on a ship is calculated by comparing the distance the ship travels say in 24 hours with the theoretical distance the propeller should have travelled according to its pitch.
If the ships propeller has a pitch of 5 metres then it is trying to advance through the water at a rate of 5 metres / revolution. If the engine is turning at 100 RPM then this is 500 metres / minute or 720000 /day IE 720 kilometres.
If the mate calculates the ship actually travelled 700 kilometers then the apparent slip is
difference between engine miles and true miles / engine miles * 100
IE 2.7%
Wiki User
∙ 14y agoSlip=100%-Efficiency
Efficiency=Observed Speed or Distance / Engine Speed or Distance
Mean Apparent Slip = Distance Run by Propeller - Distance Run by Ship / Distance Run by Propeller
Distance Run by Propeller = Picth X Total Engine Revolutions per day / 1852
I wish this can help those who are in need of this formula.
Rgds
Ahmad
Wiki User
∙ 11y agoPropeller constant = Propeller pitch / 1853.2
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