FAQ
About the calculation.
General information only; the charter party wording and the statement of facts always govern.
How does this laytime calculator work?
It runs the laytime clock from commencement to completion. While laytime is running, weekends, holidays and the exceptions you enter stop the clock. Once the allowance is used up, the vessel is on demurrage and time counts in full, except for exceptions you have marked as counting at half rate or not at all.
What does “once on demurrage, always on demurrage” mean?
Under English law, laytime exceptions generally stop applying once laytime has expired, so weekends, holidays and most excepted events count against charterers. Clear wording in the charter can change this, for example clauses giving half demurrage for strikes or excluding time lost through the vessel’s own breakdown. Use the “if on demurrage” setting for each exception to reflect the clause.
What is the Gencon 94 commencement rule?
Under Gencon 94, if notice of readiness is given up to and including 12:00, laytime commences at 13:00 the same day; if it is given during office hours after 12:00, laytime commences at 06:00 the next working day. The calculator skips days that fall within your weekend or holiday settings when finding the next working day. Check whether your charter amends this rule or limits the office hours for tendering notice.
What is the difference between all time saved and working time saved?
Despatch on all time saved is calculated on the full calendar time from completion until laytime would have expired, including weekends and holidays that would have been excepted. Despatch on working time saved counts only the laytime that remained unused. The calculator shows both, and applies the basis you select.
Does the calculator handle “unless used” terms?
It treats weekends and holidays as excepted even if used. If your charter says weekends are excepted unless used, and work was carried out during an excepted period, choose SHINC and enter the unworked parts of the weekend, and any holidays, as exceptions instead.
Can I rely on this for a claim?
It produces a clear first draft that you can copy into a spreadsheet. A formal claim should follow the exact charter wording, the signed statements of facts and any time bar and documentation requirements, so have it checked before submission.
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