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SHP vs DHP - Transmission Efficiency

Shaft horse power (SHP) vs delivered horse power (DHP) accounting for bearing losses, gearbox / shaft-line transmission.

SHPDHPTransmission
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Formula, assumptions, and limits

DHP=BHPηtransηshaftDHP = BHP \cdot \eta_{trans} \cdot \eta_{shaft}
SymbolMeaningUnit
BHPBHPBrake horse powerkW
SHPSHPShaft horse powerkW
DHPDHPDelivered horse powerkW

Source: Harrington - Marine Engineering

In short

Shaft horse power (SHP) vs delivered horse power (DHP) accounting for bearing losses, gearbox / shaft-line transmission.

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