Nautical Term: After perpendicular
Definition of After perpendicular
The term After perpendicular refers to the vertical line passing through the intersection of the load water line and the after edge of the stern post. For submarines and ships having a similar stern, this line is the vertical line passing through the points where the design waterline intersects the stern of the ship.
For example, in constructing a new ship, the naval architects would carefully consider the location of the After perpendicular line. This line would determine the location of the stern and the overall shape of the ship.
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