S 3 — NGS TU0633 — Kapolei, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental horizontal control framework for the United States. Located near Kapolei on the island of Oahu, Hawaii, at coordinates 21.33889° N, 158.03639° W, this trig point serves as a reference for surveying and mapping activities across the Hawaiian Islands region. Triangulation stations function as monumented points of known position, enabling surveyors to extend precise measurements across large areas through geometric relationships. The NGS network integrates with broader geodetic systems to support infrastructure development, property demarcation, and scientific research. Verification and documentation of such control points remain essential for maintaining the accuracy and reliability of Hawaii's surveying framework. Current coordinate data and monument condition records ensure the point's continued utility for professional surveying work.

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