In a "berth charter" it is important to include a stipulation in a charterparty to the effect that the Notice of Readiness can be tendered (and laydays will begin to count) as soon as the vessel has arrived at the port of loading or discharge "whether in berth or not". It can happen in practice that a vessel for which no berth is available immediately after arrival is ordered by the port authorities to anchor outside the official port limits awaiting berth, in which case difficulties may arise if the charterer decides that the vessel is not an "arrived ship" and for this reason is prevented from tendering notice of readiness.