The rear or stern section of a ship or other vessel; the portion that comes after or behind the main body.
Compound of 'after' and 'part' (Old English part, from Latin pars). This nautical term has been used since the 1600s to describe the architectural divisions of ships.
The shape and design of a ship's afterpart determines how water flows around it during movement, which is why naval architects obsess over these curves—small changes in the afterpart's hydrodynamics can save thousands in fuel costs.
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