Abstract: A ship for collecting oil from oil spills floating on the surface of the sea comprising a pair of side hulls forming between them a flow passage through which a stream of oil-laden water will flow when the ship travels through the floating oil on the sea. Between the side hulls, a center hull is provided in which a well is formed having a bottom which opens into the flow passage and through which the oil in the passage may float upwardly to be trapped in the well. A pump is provided to pump the trapped oil from the well. The bottom of the well is below the surface of the sea and the stream is deflected under the bottom by a forwardly-inclined segment extending between the side hulls. A splash plate is provided to overlie the upper end of the segment to direct the upward splashes from the segment over the top edge of the segment into a splash chamber behind the segment. The water and/or oil collected in the splash chamber may flow into the well through a communicating opening.