🔍 Key Concepts

• Cold water immersion and hypothermia risk after abandoning ship • How insulation and trapped air in clothing affect heat loss and flotation • The role of a lifejacket / PFD (personal flotation device) versus regular clothing

💭 Think About

• Think about what happens to your body temperature when you are in cold water for a long period—what is your main survival priority? • Consider how layers of clothing behave when wet: do they trap anything between the layers that might change heat loss or flotation? • Ask yourself which option describes a realistic survival advantage that instructors emphasize in cold-water safety training.

✅ Before You Answer

• Verify which effect is most important for survival time in cold water: temperature, breathing, or buoyancy • Consider whether ordinary clothing is designed primarily to help you float or to slow heat loss • Check that the choice you select matches standard abandon-ship and cold-water survival guidance in training manuals and USCG courses