当船只需要进入浅水区域时，活动龙骨板可被提起，以减小船底深度——即使不将其提起，它在船只行驶中触碰到水底时也会来回上下摆荡。
The centerboard can be raised to decrease displacement to allow the boat into shallower water - and it should swing up and back if it hits the bottom when sailing with it down.
同样重要的是，它的操控性能评估以确保其选择桩所需的能力和穿透深度可在一个合理的行驶阻力。
It is also important to assess the driveability of the selected pile to assure that the required capacity and penetration depth may be achieved at a reasonable driving resistance.
行车过程中遇到积水路面时首先要观察水的深度，如果水漫过车轴就不宜继续行驶。
To avoid "water" : When encountering water gathered on the road, the driver should first observe the depth of it. If the water is above the axle, continuous driving is not advocated.
行车过程中遇到积水路面时首先要观察水的深度，如果水漫过车轴就不宜继续行驶。
To avoid "water" : When encountering water gathered on the road, the driver should first observe the depth of it. If the water is above the axle, continuous driving is not advocated.
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