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... ks.
It is used to control the water carrying capacity inside the submarine and maintain various operations such as surfacing and diving under different conditions.
The overall length of this E-class transport boat is more than 100 meters. In addition to the cargo hold, it is impossible to have only one ballast tank at the bottom.
These ballast tanks are usually independent and sealed structures, and are not connected to each other, but are completely isolated and independent ...
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