502 WAKE GEOMETRY 



at the surface at a distance of 600 ft astern. From based on only one record. No clean-eut wake records 



this figure, the slope of the top of the wake may be were obtained at greater depths (200 and 400 ft), but 



computed, assuming it is constant; the ratio of screw this may be attributed to purely operational diffi- 



depth to distance of emergence of wake, 48/600 or culties since the submarine found it difficult to pass 



0.08, corresponds to a total angle of divergence of directly under the stationary launch carrying the 



9 degrees at the screws. This value, however, is fathometer. 



