🔍 Key Concepts

• Effect of transferring weight transversely on a vessel’s moments • How to use weight × transverse distance (w × d) to find change in transverse moment • Remember that moving weight from port to starboard creates a moment through the total distance between tank centers

💭 Think About

• First, think about whether you should use the distance from the centerline to each tank, or the total distance between 1P and 10S to compute the moment change. • Ask yourself: when you move ballast from 1P to 10S, does the transverse moment change come from two separate moves (to centerline, then to the other side) or one move across the full span? • Consider whether the resulting moment should be counted as an increase or a decrease, and what the question’s wording implies about the sign.

✅ Before You Answer

• Verify you are multiplying the correct transverse distance in feet by 103.48 long-tons. • Confirm that you are using the full shift distance between the initial and final positions of the ballast, not just one side’s arm. • Check that your final number matches one of the choices and that you have labeled it correctly as an increase in transverse moment.