🔍 Key Concepts

• Center of flotation (LCF) definition and its role in trim calculations • How to read/use the hydrostatic tables or curves for the vessel COASTAL DRILLER • Longitudinal reference point meaning of AF0 (from forward or aft perpendicular/FP0)

💭 Think About

• From which specific draught or displacement condition is the center of flotation taken in the stability booklet for this question? • On the hydrostatic page, where is the LCF column, and how is the distance measured (forward or aft, positive or negative)? • Do the answer choices look more like a point near mid‑length of the vessel or very close to one end, and what is typical for LCF on a ship of this size?

✅ Before You Answer

• Make sure you are using the correct hydrostatic table for the condition mentioned in the exam problem set (same draft/displacement as COASTAL DRILLER in this question series). • Verify whether AF0 means distance aft of the forward reference point (e.g., FP or F0) and check the sign convention used in the booklet. • Double‑check you are reading the value in feet, not meters, and that you are not confusing LCF with LCB (longitudinal center of buoyancy).