Demurrage is a form of compensation due to violation of the time of loading and unloading cargo and are usually listed in the rental contract of cooperation. Demurrage can sometimes cause damage to the seller because it would increase the total cost of the transportation. In 2010, PT. Indominco accept losses due to unpreparedness of the coal supply to reach the 11 million USD. The variables used as an object of research is the actual rate of supply of coal and ship loading, coal supply is ready to sell the supply of coal production has an influence on the actual rate of replenishment ships. The analysis is conducted to find the relationship and influence in this study using the Pearson product moment correlation analysis. The data used is the average of the actual supply of coal and ship loading rate in a year. The steps in the research is to determine a hypothesis in the form of sentences and statistics and make a helper table. After the complete data correlation calculation, obtained r = 0.674 and relatively strong, the coefficient diterminan 45.37%, so the supply of coal to the known effect of actual charging rate is significant.
