🔍 Key Concepts

• Waterspout characteristics – wind strength, rotation, and effect on nearby objects • MODU (Mobile Offshore Drilling Unit) – exposed working decks, temporary structures, loose gear • Difference between direct wind effects and secondary effects like rain, waves, and visibility

💭 Think About

• Which option describes something that would happen suddenly and violently as a rotating column of air passes directly over an offshore structure? • Look at each choice and ask: does this effect depend mainly on strong, swirling winds near the surface, or something else like clouds, rain volume, or sea state? • On a MODU, what items or conditions are most vulnerable when you get a sudden, very strong gusty wind—what could directly harm personnel?

✅ Before You Answer

• Identify which choices are primarily wind-driven versus those caused more by rain, waves, or cloud cover. • Consider which effect would be immediate and localized right where the waterspout hits, rather than a broad-area weather effect. • Ask: which option focuses directly on risk to personnel on deck from conditions created by intense winds?