Determination of generator capacity on fishing and training vessel is based on the estimations of necessary power under the various operating conditions, using the electric power consmption table, the same table as a merchant ship uses, which is adopted also on fishing boat. In spite of such a determination on Shinyo-maru (Tokyo University of Fisheries), generator was forced the operation under low load.
We researched, here the operationg condition of automatic start-stop machines on Shinyo-maru, as well as the power consumptions on large fishing and training vessels of other national universities.
Then we found out the real situation concerning the necessary power on fishing and training vessel, and the difference between the standpoints of a merchant ship and ours concerning the table. The diversity factor and demand factor were also estimated.
We came to the following conclusions;
1) The operations of the generator under low load frequently occurred.
2) Comparing to a merchant ship, we are apt to overestimate the necessary power.
3) As the special generator during the anchorage generate little electricity, which can hardly supply the airconditioning units with enough power, generator capacity of that suitable for all-seasuns, is, therefoer, desirable.
4) As a value of diversity factor, we recommend the use of 35%,
5) Normal necessary power (Y) under summer service condition is related to gross tonnage (X), complement (Z) and length between perpendiculars (W), by the following equations.
Y=0.0988X+59.0, Y=2.11Z-25.5, Y=6.72W-232

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This paper presents an approach for the dynamic stability anaiysis of marine power system. In most cases the marine auxiliaries are driven by electric motor. Recently diesel engines for generators have become compact by applying a high-super charging system. Momentary speed variations of the power system has been increased because small GD² of the engine and generator rotor.
It is nessesary to apply soft starting method on marine auxiliaries.
When motor is started some proficient crew are used to utilize starter switch turned on and off periodically by thier experimental knowledge for stabilize electric power system.
We denominates this technique as “Chopping-Start” that a method of electric motor soft starting techniques. It is presented the simplified simulation model of the turbo charged diesel engine driven generator and large capacity induction motor with load.
The analytical model is shown in the form of blockdiagram and estimated by digital computer using CSMP language.
It's found that the effect of “Chopping-Start” on a performance simulation model system has been studied speed and voltage regulation are smaller than use the method of line start on electric motor.

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It is fundamentally important to understand the properties of soot formation and decomposition in diesel combustion.
Those processes depend on the following factors such as the size and velocity distribution of drops, evaporating characteristics of spray, the properties of the fuel and its gaseous environment and the mechanism of the mixing processes.
The purpose of this study is to investigate the effects of the air temperature, air velocity and swirl ratio on soot formation due to a single shot injection of toluene in a combustion chamber under atmospheric pressuere.
The results are as follow:
(1) With further increase in intake air temperature (T₂: K), it is considered to increase the soot formation because of shortening of ignition delay period.
(2) As the air velocity and swirl ratio increase, the soot formation decreases.

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