Work out laytime and demurrage instantly with clear inputs, formula shown and shareable results.
Laytime is the time allowed for loading or discharging. Exceeding it puts the ship on demurrage, charged pro rata per day; finishing early may earn despatch, often at half the demurrage rate. Both are calculated on the difference in hours divided by 24.
Laytime settlement
Demurrage = (used - allowed) / 24 x daily rate; despatch applies when the difference is negative
Marine results are planning estimates only. Verify against the vessel's approved stability booklet, loading manual, class society rules and applicable maritime regulations before loading or sailing.
It is the common convention but it is negotiable, and some charters have free despatch (none payable at all).
Only if the charter party says so. 'Weather working days' exclude time lost to weather; running days do not.