Weather working day
WWD
Meaning
A weather working day is a working day on which the weather allows cargo work; days or hours lost to bad weather do not count as laytime.
Also written as WWDSHEX, WWDSHINC
Weather working day explained
Weather-working-day terms are mainly a dry cargo concept, where rain can stop loading grain or steel. Combined terms such as WWDSHEX mean weather working days, Sundays and holidays excepted.
Tanker laytime is usually counted in running hours instead, because liquid cargo can generally be worked in most weather. Weather can still matter on tankers at exposed berths or SPMs, where the charter decides who bears the delay.
Related terms
Running hours
Running hours means laytime counts continuously, hour by hour, around the clock, subject only to the exceptions written in the charter.
SHEX
SHEX means Sundays and public holidays do not count as laytime, even if cargo is worked on those days, unless the charter says time used counts.
SHINC
SHINC means laytime keeps running on Sundays and public holidays, so every day counts as laytime unless something else excludes it.
Laytime
Laytime is the time the charterer is allowed, without paying extra, to load and discharge the cargo under a voyage charter.