Whether in berth or not (WIBON). This expression refers to the time when a notice of readiness can be tendered by the master. It converts a "berth charter" into a "port charter", whereby a ship becomes an "arrived ship" and can tender notice of readiness, thus triggering off laytime, if the berth is unavailable and the charterparty expressly states that notice can be given whether the vessel has arrived in the berth or not.