In the present report, the results of measurements of velocity of the slip stream caused by the Troost B 4-40 type propeller are arranged on the basis of the theoretical inquiries described in the first report, so that these results may conveniently be utilized for the calculation of the force acting on the rudder and other items. Furthermore, to examine the suitability of the current propeller theory by clarifying the property of the velocity-field of the slip stream, the comparison of the experimental results with the results of the numerical calculation carried out by adding various kinds of practical correcting calculation to the theoretical calculation stated in the first report, is executed. Some conclusions obtained from these results are as described in the following lines. i) The correction coefficient of circulation based on the lifting surface theory must take a value of 0.700.85 at 0.7 R section (R : radius of propeller), in order that it may meet the experimental value, independently of the advance constant. Furthermore, it is nearly constant in all sections except the tip. ii) With respect to the velocity distribution of the slip stream, the measured value quite agrees with the value calculated on the basis of the current propeller theory in relation to the peripheral component. With respect to the axial component and radial component, homever, the experimental value always become 1015 % larger than the calculated value in the vicinity of the propeller disk.