Etymology:
The word "keel" comes from the Middle English word "kele," which is derived from the Old Norse word "kjölr," meaning "ship's bottom." The Old Norse word is cognate with the Gothic word "kilius," meaning "ship."
Meaning:
A keel is the central structural element of a ship's hull. It provides the ship with stability and strength and forms the base on which the rest of the hull is built. The keel's shape and design are critical for a ship's performance, including its speed, maneuverability, and resistance to capsizing.
Origin:
The first known use of keels on ships dates back to ancient Egypt, where they were used on large sailing ships. Keels were also used on Viking longships, which were particularly well-suited for long sea voyages due to their deep keels that provided excellent stability.
Over time, the design of keels evolved as ships became larger and more technologically advanced. Today, there are various types of keels used on different types of ships, including:
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