🔍 Key Concepts

• Naval architecture symbols used on stability curves and hydrostatic diagrams • The standard Greek letter commonly used to represent displacement (weight of water displaced) • Distinguish between symbols for displacement, KB/LCB, and KM/GM

💭 Think About

• Look at each of the numbered symbols and think about which one is a single Greek letter that is often used in math and engineering to represent a change or a total quantity. • Ask yourself which symbol you have seen next to values in tons on hydrostatic curves or in stability problems, usually written as something like "___ = 5,000 tons". • Compare these symbols with what you remember from your stability book’s legend or symbol key— which one is labeled as the vessel’s total displacement?

✅ Before You Answer

• Verify which symbol you have previously seen written as Δ (Delta) in your notes or stability tables. • Make sure you are not confusing the symbol for LCB/LCG (longitudinal centers) or GM/KM (metacentric heights) with the one for displacement. • Double‑check the exam booklet’s front pages or formula sheet—there is often a legend of symbols that shows exactly how displacement is drawn.