Hull Maintenance Technician HT2 Practice Exam

Which lumber grade contains only a few minor blemishes but remains usable?

Grade A Grade C Grade D Grade B

Correct Answer:

Grade B

Explanation:

Lumber grading centers on how blemishes affect usability and appearance. A grade that has only a few minor blemishes but still remains usable sits in the middle range: it preserves most of the wood’s strength while allowing small defects that don’t compromise structural integrity. This description fits Grade B, which typically shows minor imperfections like small knots or light blemishes but is still sound and suitable for general construction and interior work. Higher grades would be cleaner with fewer blemishes, while lower grades have more defects and are less suitable for visible or critical applications. So, Grade B is the best match for “only a few minor blemishes but remains usable.”

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