216. Cases where prerequisites of 'arrival' not necessary.

Where a charterparty provides that laytime is, on the giving of notice of readiness, to commence 'whether the vessel is in port or not' (a provision often called a WIPON clause), sometimes the vessel must reach a usual waiting area for the port in question and the vessel must be at the immediate and effective disposition of the charterers1.

Where a charterparty clause provides that notice of readiness may be given 'berth or no berth' (often referred to as a WIBON clause), the ship's master is entitled to give notice of readiness on arrival at the customary anchorage and the