Weather working day (WWD). This is defined in the Charterparty Laytime Definitions 1980 as: ". . . a working day or part of a working day during which it is . . . possible to load/discharge the cargo without interference due to the weather.
Without guarantee (W.O.G.) If a statement is made either during negotiations or in a charterparty and it is qualified with the words (or abbreviation) this indicates that the party using the qualification is not
WCCON (Whether Customs cleared or not). This phrase refers to the time when a notice of readiness can be tendered by the master of a vessel especially if the vessel has not reached its agreed destination if this is a berth (in a "berth charter") because this is unavailable.
Working Time Saved (WTS). If the cargo operations are completed within the laytime allowed to the charterer, despatch can become payable to him. The despatch clause in the charterparty specifies how this despatch is to be calculated.
Washplate. In order to minimise the movement of fuel oil or water in partially filled tanks during heavy weather, thereby exposing the tanks to heavy strain, longitudinal washplates are fitted, thus reducing the free surface.