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What’s the risk of hypothermia in a life raft?

April 6, 2026

Quick Answer

Hypothermia is a significant risk in a life raft, especially in cold water and windy conditions, where the body can lose heat rapidly, and the risk of hypothermia increases to 50-60% within 2-3 hours.

Understanding the Risks of Hypothermia in a Life Raft

Hypothermia is a leading cause of death in life raft emergencies. When a person is submerged in cold water, their body loses heat rapidly, and their metabolism slows down. In cold water (below 50°F/10°C), the body can lose heat 25 times faster than in air, increasing the risk of hypothermia.

Managing Hypothermia in a Life Raft

To minimize the risk of hypothermia, it’s essential to stay dry and warm in a life raft. This can be achieved by wearing a dry suit or a waterproof jacket and pants. Additionally, staying active, such as rowing or swimming, can help generate body heat. However, it’s crucial to conserve energy and rest regularly to avoid exhaustion.

Signaling for Help and Water Rationing

In a life raft, signaling for help is crucial to increase the chances of rescue. This can be done using flares, mirrors, or other visual signaling devices. However, it’s essential to prioritize water rationing, as dehydration can exacerbate the effects of hypothermia. Aim to ration 1-2 cups (250-500 ml) of water per person per day, using rainwater collection, fishing, or other methods to supplement the supply. Fishing for small fish, such as sardines or anchovies, can provide a reliable source of protein and calories.

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