The first mention of a Charter Party in England was as early as 1369. The term Charter Party derivesfrom the Medieval Latin phrase “Carta Partita” meaning “divided document”. The contract would be prepared twice on the same piece of paper and torn into two pieces, each party taking one portion. If the torn edges of the two pieces fit together, then the document was authentic. I cannot confirm that there was an allowed laytime for the voyage back in 1369.
In case anyone has forgotten the definition of Demurrage I quote below from Llyod's of London Dictionary of Shipping Terms:
"Demurrage: Amount of money paid to the shipowner by the charterer, shipper or receiver, as the case may be for failing to complete loading and/or discharging with THE TIME ALLOWED IN THE CHARTER PARTY'.
I received a demurrage claim for $42K. I requested a copy of the Owner's Invoice and Demurrage Calculation. I received the Owner's invoice which was for $22K. I asked how they could invoice this out at $42K. The response was that I the client could pay the $22K. I requested the Owner's Demurrage Calcuation as $22K covered the voyage. No response.
The stubbornness on the part of these companies prolongs the settling of their claims. In some cases years before the claim is settled. Considering the time value of money you would think that they would move forward.