D1/2D (DHD) Despatch half Demurrage. The rate of payment of despatch by the shipowner to the Charterer for releasing the ship earlier than the period of agreed laytime (“Despatch”) is set in the charterparty to be half the rate of compensation at which the Charterer pays the shipowner if the agreed laytime is exceeded (“demurrage”). It is traditional for despatch payments to be at half the rate of demurrage payments.