🔍 Key Concepts

• Review common ship plan symbols used in basic naval architecture diagrams (displacement, baseline, amidships, forward perpendicular). • Think about what displacement (Δ) usually looks like as a symbol compared to the others shown in the figure. • Recall that amidships and forward perpendicular are positions along the ship’s length, while baseline is a reference line used for vertical measurements.

💭 Think About

• First, match the obvious symbol you recognize for displacement; once you identify that one, you can eliminate it from consideration for symbol 3. • Ask yourself: which of these remaining terms would most logically be represented by a pair of overlapping circular/curved shapes as seen in symbol 3? • Consider whether the symbol for a reference line (baseline) would more likely look like letters/lines, and whether a symbol for a specific station along the length (amidships or forward perpendicular) might be shown differently.

✅ Before You Answer

• Make sure you can clearly identify which symbol in the series corresponds to displacement (Δ); that should be the easiest one. • Verify which terms describe a position along the ship’s length (from forward to aft) and which describe weight or a vertical reference line. • Before choosing, mentally match each remaining term to the type of graphic you’d expect: straight line reference, mid-length location, or forward-most perpendicular location.