The estimated Port days field in the Estimate is calculated using the following formula:
EstPD = ((Cgo Qty / LD disch rate) + TT) x SHEX
Where.
Estimated Port Days = EstPD
Cargo quantity = Cgo Qty
Loading/Discharging rate = LD disch rate
Turn Time = TT
Sunday Holiday excluded = SHEX
You may alter the calculation formula by enabling the Configuration Flag, CFGVoyapiNoShexFactorOnTurntime.
Doing so, will alter the way the estimated port days is calculated:
EstPD = ((Cgo Qty / LD disch rate) x SHEX) + TT