In a water shuttle operation, how should grade be managed for loaded and empty tenders?

• A. Loaded go uphill; empty go downhill
• B. Loaded and empty both go downhill
• C. Loaded go down grade; empty go up grade
• D. Loaded go up grade; empty go down grade

Answer: (C)

Managing grade in a water shuttle relies on using gravity to keep the cycle efficient and safe. When a tender is loaded with water, let it travel downhill on the grade so gravity helps move the heavier load toward the fire scene, reducing the amount of engine work and allowing for better speed control with braking. Returning to refill, empty tenders should go uphill to the water source because they’re lighter and climb more easily, making turnarounds quicker and safer. This setup minimizes the effort required to move a full load uphill and keeps the shuttle flow steady.