The Per Day rule uses the entered rate and the calculated number of days to estimate the various amount.
Amount=Days×Rate
Days are calculated differently depending on the entity the various item is created for.
For voyage, the voyage duration is used: the difference between the voyage start date and the last port call’s departure date, and the estimated days are stored in the various item’s quantity
For cargo, the voyage duration is also used
For downtime, the offhire duration is used
For port call, the duration between the arrival and departure dates is used.
Important notes about the Per Day rule
The various amount for each item is updated dynamically as the voyage, downtime or port call days change.