Abstract: The present invention relates to apparatus for oil spill recovery and more particularly, concerns a catamaran style sea-going vessel capable of lifting an oil spill or slick from the surface of the sea water, separating the oil from the sea water and storing the recovered oil temporarily for transfer to a larger vessel or storage facility. The apparatus utilizes a pair of contra-rotating drums for oil pick-up, the oil being directed to come into contact with the outer surface of the drums by a deflector extending between the hulls of the vessel.