How many AFFF mixing stations are on board?

• A. 21
• B. 9
• C. 15
• D. 30

Answer: (A)

Mixing stations are the points where foam concentrate and water are combined to create the AFFF foam used for firefighting, and they’re distributed around the vessel to ensure proper coverage and reliable operation under pressure. The number of mixing stations reflects the ship’s foam system design, aiming to reach all critical zones with redundancy. In this training scenario, the system is designed with 21 mixing stations, so that multiple areas on board can be fed with properly proportioned foam. Always check the vessel’s Foam System Diagram or Equipment List for the exact count on your specific ship. The other options don’t fit the design used for this test, as they would not align with the documented configuration.