Service speed at CSR, at Heavy ballast (navigation) draft, with 15% sea margin.

在重压载航行吃水时，考虑15%的海况裕度，在CSR转速时的服务航速。

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Fill double ballast tanks before loading heavy lifts.

在装载重件前压载水舱打压载水。

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Even rock tools in use by heavy bump, not fresh out of stone ballast it up, but not as metal tools, as a result of deformation and destruction of accuracy.

在使用中岩石工具即使遭重物磕碰，至多掉几粒石碴而已，而不会像金属工具那样，因变形而破坏精度。

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Call it the Das Boot effect: With their deep keels and heavy ballast, J-boats push such a mass of water that they tend to hunker down in a breeze, submerging the bow and stern and soaking practically everyone on deck.

FORBES: Magazine Article