Question 26Safety & Environmental - 1st Asst/Chief

The correct answer is A) 3 minutes. According to 46 CFR 32.20-20, a fixed foam system aboard a tank vessel constructed in 1968 must be designed to supply foam for a minimum of 3 minutes. This regulation specifies the minimum design requirements for fixed foam fire extinguishing systems on tank vessels to ensure adequate fire suppression capability. The other options are incorrect because they do not align with the 46 CFR regulation for tank vessels constructed in 1968. Options B, C, and D specify longer foam supply durations that are not required for this particular vessel.