Add to ORKGThe long wave around the breakwater gap is discussed for the case of the oblique incidence of a train of periodic waves. In the analysis, the incident wave always meets at a sharp angle with the right-hand, breakwater. The most conspicuous features found in the analysis are as follows. A reverse current appears in the windward waters around the terminus of the left-hand breakwater for the wave of long wavelength which is the current against the direction of the incident wave travel. The stagnation point discriminating between the above reversecurrent and the advancing one is in a sense moving away from the breakwater gap along the left-hand breakwater for the increase of the incident angle of the incoming wave. In the analysis concerning th...