The environmental damage caused by slicks at sea and the subsequentdeposition of tar on shores is wellknown. Contingent planning forsuccessful deployment of men and material for slick combatment programmes requires knowledgeof calculated positions of the slick at anyinstant oftime after the spill has occurred. The paper presents slick drift vectors for the Arabian Sea for every 2° lat. x 2° long, grids, calculated from monthly wind andcurrent data obtainedfrom the KNMIAtlas. Monthly charts have been produced to givethe resultant drift trajectories of slicks from 61 hypothetical spills occurring in the vicinity of the shores of the Arabian Sea on thefirst day of every month. The location of possible slick deposition on the shore and the duration available for weathering have been predicted. Of 732 hypothetical spills studied, 135 may pollute the Indian coast with varying intensity.The period May-September provides more chances of severe oil deposition on the west coast of India while the period October-February may be critical for the western shoresof the Arabian Sea. The drift velocities have highest magnitudes during July. Slicks from the farthermost spill considered (370 kmoffshore) takes only 14 days to reach the Indian shore during July. Spills occurringduring December in the western Arabian Sea will affect the shores of Africa and Arabia severely.

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