How are estimated Port days calculated?
The estimated Port days field in the Estimate is calculated using the following formula:
EstPD = [(L/D Qty/ L/D Rate) + TT] x Terms
Where.
Estimated Port Days = EstPD
Loaded or Dischared Cargo quantity = L/D Qty
Loading/Discharging rate = LD disch rate
Turn Time = TT
Laytime Terms = SHEX, SHINC etc.
The Laytime Terms are defined in the Data Center by Veson and they are measured by a Factor.
![](../__attachments/906723396/image-20210426-105927.png?inst-v=1a30baa6-6eff-40fe-8230-9a183e254628)
Example:
The below screenshot displayed the port itinerary in a Voyage Estimate.
![](../__attachments/906723396/image-20210426-105519.png?inst-v=1a30baa6-6eff-40fe-8230-9a183e254628)
EstPD = [(L/D Qty/ L/D Rate) + TT] x Terms, which translates in: 5.09 days = [(80,000 mts/ 20,000 mts per day) + 0] x 1.2727
Depending on the cargo terms of the business scenario, you may need to 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 rate) x Laytime Term) + TT