Nautical Term: Scupper opening
Definition of Scupper opening
A scupper opening refers to a larger hole in the side of a ship, located at the deck line. This hole, which is longer than a typical scupper and features vertical bars, allows deck wash to flow over the side of the vessel. This feature is also known as a freeing port.
For example, while at sea, a large container ship might need to discharge some water that has accumulated on its decks. To do this, the ship’s crew might open the scupper opening located on the side of the ship, allowing the excess water to flow over the side and into the ocean.
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