The bunker survey is required in order to calculate the exact amount of bunkers on board at the time of vessel’s delivery/redelivery. The vessel is delivered by the owner to the charterer, in case of On-Hire. At this time, usually, the Master issues a Delivery Certificates stating the place, time, parties involved and total amount of bunkers on board.

In case of redelivery, the vessel is redelivered by charterer to the owner by the end of the chartering (Off Hire), when it is issued the “Redelivery Certificate”.