Nautical Term: Fin
Definition of Fin
A fin is an extended vertical surface located at the aftermost part of a watercraft’s hull. Unlike a keel, which is a submerged fin-like projection, a fin is a projecting feature above the waterline. For instance, a hydrofoil’s underwater wings are called fins, while the wing-like structures that lift the hydrofoil above the water are called foils.
Example:
The America’s Cup yacht, ‘Sorceress’, is a state-of-the-art sailing vessel equipped with a modern retractable carbon fin. The fin provides ‘Sorceress’ with exceptional stability, increased sailing speed, and reduced wind resistance, making it a formidable competitor in the America’s Cup regatta.
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