How Do You Spell DEAD WATER?

1. Dead water refers to a hydrodynamic phenomenon encountered in maritime environments, particularly in areas with strong tidal currents or rivers. It occurs when a vessel experiences a sudden decrease in speed or a temporary loss of forward motion despite applying full propulsion power. Essentially, the ship feels as if it is being held back or moving against a resistant force despite no apparent external obstruction.

   This peculiar phenomenon is primarily caused by the interaction between the vessel's hull and the surrounding water. Dead water typically arises when the flow of water around the ship generates waves, creating an area of high pressure beneath the stern of the vessel and extending forward. These waves interfere with the normal flow patterns of the ship, creating a drag that hampers its forward progress. The phenomenon is further exacerbated in locations where there is a strong stratification of water layers that do not easily exchange, like in estuaries or fjords.

   Dead water can significantly impact a ship's speed, rendering it slower and less maneuverable. To overcome this issue, various techniques have been employed, such as modifying the ship's hull shape or adding propeller thrusters to disrupt the formation of pressure waves. Additionally, adjusting the ship's operation or changing its course slightly may help to alleviate the effects of dead water.

2. The water that closes in after a ship's stern when sailing.

   Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.

Common Misspellings for DEAD WATER

The term "dead water" has its origins in sailing and refers to a particular phenomenon observed on calm waters. The etymology of the term can be traced back to Scandinavian and Dutch seafaring communities.

The term "dead" in this context does not refer to death, but rather to stillness or absence of movement. In Old Norse, the word "dauði" meant "dead" or "lifeless". This evolved into the Old Norse phrase "daudhaveti" which translates to "dead water" literally.

As Scandinavian sailors shared their seafaring experiences with other European sailors, the term spread and found its way into the Dutch vocabulary. In Dutch, "dead" is "dood" and "water" is "water". Hence, the term "dood water" emerged as a way to describe this unique phenomenon.