Kui on kokku lepitud, et pärast seisuaja möödumist peab vedaja võimaldama laeva lastimist kokkulepitud aja jooksul täiendava tasu eest, loetakse kokkulepitud ajavahemik üleseisuajaks.
'demurrage' tähendab nii 'üleseisuraha' (DE: Überliegegelder) kui ka 'üleseisuaega' (DE: Überliegezeit): In maritime law, the sum which is fixed by the contract of carriage, or which is allowed, as remuneration to the owner of a ship for the detention of his vessel beyond the number of days allowed by the charter-party for loading and unloading or for sailing. Also the detention of of the vessel by the freighter beyond such time
