🔍 Key Concepts

• Transverse moments (TM) and how they are affected when weight is added or removed on the port or starboard side • How to read tank data (weight and transverse moment) from Sample Load Form #1 (Transit) • What happens to the total TM when you discharge equal amounts of weight from symmetric port and starboard tanks

💭 Think About

• Look up the weight and TM contributions for Salt Water Ballast Tanks 1P and 1S on the Sample Load Form #1. How much TM does each tank contribute? • When you fully discharge a tank, how does that change the total TM—do you add, subtract, or ignore that tank’s TM from the original total? • If the port and starboard tanks are symmetric, what sign (port or starboard) do their transverse moments have, and what happens to the total TM when both are removed together?

✅ Before You Answer

• Be sure you are using the correct sign convention for port (−) and starboard (+) transverse moments, as shown on the sample form • Confirm you are using the total TM before discharge and then correctly adjusting it by removing the TM of both tanks • Double-check that you are using the full tank weights and TM values (not percentages or partial fillings) for 1P and 1S as indicated for the Transit condition