| 摘要 |
A ship's propeller is mounted so its blades will rotate closer to the shell plating of the adjacent hull, than is generally considered advantageous. A recess is formed inside the shell plating in the region of the propeller, the recess having a depth locating its inward wall at a distance from the tips of the rotating propeller blades corresponding to about 25% of the propeller diameter. The recess can be provided with a number of spaced-apart, transverse bars having a height less than the maximum depth of the recess.
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