Laytime Used

Laytime used = arrival to completion minus excepted periods. Compare against CP-allowed laytime to determine demurrage/despatch.

CharteringLaytime

Hours from NOR to start of laytimehTurn-time (typ. 6 h or per CP).Total hours from NOR to completionhExcepted periods (SHINC/rain/etc)hLaytime allowedh

Laytime used: 104.00h

Over/(under) laytime: 32.00h

Status: On demurrage by 32.0 h

Changing the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

\text{Used} = \text{Total} - \text{Turn time} - \text{Excepted}

Symbol	Meaning	Unit
$Total$	Clock time from NOR to completion	h
$Turn time$	Excluded period per CP (typ 6 h)	h
$Excepted$	SHEX, rain, weather suspension	h

Source: BIMCO - Voylayrules 93

In short

Laytime used = arrival to completion minus excepted periods.

Learn the theory Laytime: Voyage Charter Time Accounting