They provided a steelyard balance that allowed seasonal adjustment in the pressure head of the compensating tank and could then control the rate of flow for different lengths of day and night.
2.
Zhang Heng was the first in China to add an extra compensating tank between the reservoir and the inflow vessel, which solved the problem of the falling pressure head in the reservoir tank.
3.
The boats were equipped with compensating tanks designed to flood and offset the loss of the C / 06 torpedo's weight, but this system did not always function properly; as a result, when firing from periscope depth the boat could broach after firing or, if too much weight was taken on, plunge to the depths.
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