In voyage chartering, permitting charterers to add up the laytime allowed for loading and discharging is called Reversible Laytime. In other words, any time saved (or exceeded) at the load port can be carried forward to the discharge port. Depending on the drafting of the relevant clause, charterers may only have a limited period of time for deciding whether to reverse.
‘the period of time agreed between the parties during which the Owner will make and keep the vessel available for loading or discharging without payment additional to the freight’.or
'the time allowed to the charterers to load/discharge cargo in return for payment of freight to the owners. If the charterers are unable to load/discharge cargo within this allowed period, they will be obliged to pay demurrage or detention to compensate the owners for their loss of use of the vessel'
