Question 1408 Deck General

The correct answer is A) use black lettering on a white background. According to the regulations for tank vessels transferring non-flammable hazardous cargo in bulk, the warning signs must use black lettering on a white background. This color scheme is specified in the applicable regulations to ensure the signs are clearly visible and legible. The other answer choices are incorrect. Option B is incorrect because the regulations only require the signs to be visible from both sides, not necessarily from forward and aft. Option C is incorrect because the signs must be displayed at all times, not just during cargo transfer operations. Option D is incorrect because the signs are required to indicate the cargo being transferred, not specifically "NO SMOKING."