Laytime used = arrival to completion minus excepted periods. Compare against CP-allowed laytime to determine demurrage/despatch.
Formula
$$ \text{Used} = \text{Total} - \text{Turn time} - \text{Excepted} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $Total$ | Clock time from NOR to completion | h | SoF |
| $Turn time$ | Excluded period per CP (typ 6 h) | h | CP |
| $Excepted$ | SHEX, rain, weather suspension | h | SoF |
Sources
- BIMCO - Voylayrules 93.