Engine General (Supplementary) USCG Question #817 (Set 16)

Which of the figures shown in the illustrations depicts an orthographic projection? GS-0142

USCG Exam Illustration GS-0142
USCG Examination Diagram: Illustration GS-0142
Official USCG Answer & Rule Citation

Correct Answer: Option A — A

Orthographic projection represents a three-dimensional object using multiple two-dimensional views, typically top, front, and side, projected onto planes perpendicular to the object's axes. Figure A demonstrates this standard engineering practice, which is essential for interpreting marine machinery blueprints and fabrication drawings in accordance with industry drafting conventions.

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