Double-hulled tanker

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A double-hulled tanker is a large tanker ship used for transporting liquids (usually petroleum).

The ship has a double hull to prevent the liquid cargo from spilling; if the outer hull is breached, the inner hull keeps the transported substance in place.

Double-hulled tankers were required under 46 USC ยง 3703a after the Exxon Valdez oil spill. The U.S. Congress passed The Oil Pollution Act of 1990 requiring double-hull tankers now, but allowing the transportation companies until 2015 to replace existing tankers.

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