船舶推進問題に関する二三の簡便法

抄録

In this paper the Author reports about the methods of simplified solutions for the following problems, which are often proposed in the propulsion of ships :
1. Simplified method of determining the diameter of propellers.
2. Relations of the small changes of resistance, speed, revolution and propeller.
2. Variation of power due to the small change of ship-speed.