Question 1328 Deck General

The correct answer is D: At 95% of tank capacity or higher but less that the setting of the overfill alarm. The reasoning for this is that regulations require cargo tanks on tankships to have high level alarms that activate at 95% of tank capacity or higher, but lower than the setting of the overfill alarm. This ensures there is a warning prior to the overfill alarm activating at the maximum safe filling level. The other options are incorrect because A) 95% is the minimum, not the maximum, B) 99% is too high, and C) 90% is too low for the high level alarm activation point.