A ship is considered as an "arrived ship" and the laytime starts to count, if following conditions are satisfied:
(See also Bes, J., Scheepvaarttermen, Amsterdam, Uitgeverij V.H.C. De Boer Jr., 1953, 57.)
It is of the utmost importance how the loading/discharging berth is described in the charter party. The following possibilities can occur:
It goes without saying that such provisions are very disadvantageous for the ship, especially in times of congestion.
It is in the Ship Owner's profit to be as vague as possible when indicating the loading/discharging place in the charter party. In box 10 of the GENCON charter party it is for that purpose better for the Ship Owner to simply indicate the loading place with the name of the harbour e.g. "Barcelona" instead of "Berth No 2 at Barcelona".
In most charter parties the "Laytime Clause" is completed with the words whether in berth or not (wibon), which means that the master can present the notice of readiness and that the laytime starts as soon as the ship arrives in the port, even if there is no berth available. This is from the Ship Owner's point of view the most favourable condition. Once the ship has arrived and the "notice of readiness" is accepted, and the shippers/receivers wish to load or discharge the ship at a certain place, it does not matter how long they wait before indicating this place. The laydays have anyway started, so that possible delay at indicating the loading/discharging place increases the chance for demurrage.
Note
Sometimes one finds instead of "Whether in berth or not" the expression "Free of turn".
This advantageous agreement for the Ship Owner is not always accepted by the Charterer and replaced by:
..... in regular turn: the laydays only start when the ship has arrived at its berth, bearing in mind the "notice".
In order to avoid that the ship would lose too much time by having to wait for a berth, the "turn period" is reduced by:
"Ship to load in turn not exceeding…. hours".