Customary despatch (CD or CQD)

Customary despatch (CD or CQD; Customary quick despatch)

The bare meaning of the CD phrase is that the charterer must load and/or discharge as quickly as possible depending on the prevailing circumstances at the loading/discharging place. The phrase seems to modify the charterer’s obligation to load/discharge the ship in a reasonable time but there is still no fixed criteria for how quick “customary despatch” should be, nor do the words point to a definite period of time allowed to the Charterer.