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Authors studied on the change of body build and factor loading on some functions of seamen between two groups ； downwards of 29 (！ 1 Group) and the upwards (B Greup) ． And 齟 explained the difference in loading proportion of body height ， weight and girth of chest on each function and the rnotor cap4city index・ The results obtained were as follows：

There is no question that 6fficers and crew shou ユ d attend de互 igently tQ their duties and persevere in their efforts to progress the t ' echnical ski1L Furthermore， for the purPose of safe and efficient operation of ships ， the need of technical mutual understanding between all departments in the ship 五 11ust be recognized

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