海事安全部门采取了重要的改进措施：单壳船体的油轮正逐渐被淘汰，像阿拉斯加瓦尔迪兹镇这样的地方也成立了相当出众的溢油事故应急团队。

Maritime safety agencies mandated key improvements: single-hulled tankers are finally on their way out, and some places, like the Alaskan town of Valdez, have created impressive spill response teams.

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告诉单船指导员装货时候保持船体平衡。

Please tell the Foremen keep the vessel level during loading.

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结果表明，单区阴极保护系统辅助阳极位置决定船体表面电位曲线的形状，参比电极影响曲线电位值的大小。

Resultsfrom a single-zone system show that the shape of the potential profile is determined by anode location and its level by the setting ofthe reference electrode.

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