Thought for the day

"You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete." -- Buckminster Fuller

By definition, a midget submarine is less than 150 tons, has a crew of no more than eight, has no onboard accommodations, and mates with a mother ship to provide accommodations and other support. Works.

The Japanese Navy built at least 800 midgets in 7 classes, but only a fraction had any noticeable effect on the war. Their intended purpose was initially to be deployed in front of enemy fleets, but their actual use would be in port attacks and coastal defence.

Japanese dwarf subs were not named, but were numbered with a "ha" number (eg, Ha-19). These numbers were not displayed on the exterior and operationally referred to the dwarves according to their parent ship numbers.

Thus, when I-24 launched the Ha-19, the midget was known as "I-24tou" (designated "M24" in some texts). The "ha" numbers were also not unique; Some Type D numbers were carried from the Ha-101 to the Ha-109.

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