Photo luminescent materials shall not be placed where they may violate material condition.

• A. Dog Zebra
• B. Red
• C. Blue
• D. Yellow

Answer: (A)

Placement of photo-luminescent materials must not compromise the ship’s material condition. These markings are meant to help people evacuate or navigate in darkness, but putting them in the wrong spot can interfere with critical surfaces, openings, or equipment, or affect watertight integrity and overall readiness. The important point is where you put them, not what color they are. So the best choice is the option that emphasizes the placement concept rather than a color cue, reminding you that the rule focuses on avoiding locations that could violate material condition. In practice, install photo-luminescent markings along accessible, clearly visible escape paths and on surfaces that won’t be damaged or obstruct essential operations, while ensuring they don’t interfere with the ship’s readiness or safety requirements.