Abstract:
Rupat Strait is one of small strait in Malacca Strait which located in among coastal of Town Dumai area with the Rupat Island in Riau Province. Dumai is known as oil city because there are two of the largest oil companies, namely PT Pertamina and Chevron Pacific Indonesia. In normal conditions, high waves in the Strait of Rupat range 0.07 to 0.21 m, flow velocity 0.22-0.82 m/ s and depths 3-27 m. The middle of the deepest part and the cruise line. Position of Rupat Strait semi-closed with the condition of semi-diurnal tide has potency to cause the happening of oil accumulation in territorial water which can generate the damage of ecosystem territorial waters. Strait Rupat own the variety of various type mangrove representing habitat of various fish type and protect the coast from wave and aberration. Various transportation activity, processing and oil distribution in coastal area of Dumai cause the territorial water of Strait of Rupat gristle to oil contamination.
