Air bubbling device

Japanese: エアバブリング装置 - えあばぶりんぐそうち
Air bubbling device

...In addition, fuel and fresh water tanks that are in contact with the outer hull require heating devices. Some icebreakers use air bubbling devices that inject air or warm water into the outer hull to reduce hull resistance and improve icebreaking efficiency.
[Icebreakers of the World]
Icebreakers, whose main purpose is to break ice, are said to have appeared in the mid-19th century.

*Some of the terminology used to refer to "air bubbling equipment" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…また,外板に接している燃料や清水タンクには加熱装置が必要である。空気や温水などを船体外板に噴射させて船体抵抗を減少させ,砕氷効率を高めるエアバブリング装置を用いる砕氷船もある。
[世界の砕氷船]
 砕氷を主目的とした砕氷船は,19世紀半ばに出現したといわれている。…

※「エアバブリング装置」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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