1 to 3 hrs. 1 to 6 hrs. 2 to 40 hrs. In water less than 50 degrees you should wear a wet suit or dry suit to protect more of the body. 1.While in the water, do not attempt to swim unless to reach nearby safety.
Unnecessary swimming increases the rate of body heat loss.
Keep your head out of the water. This will increase your survival time. 2.Keep a positive attitude about your rescue. This will increase your chances of survival. 3.If there is more than one person in the water, huddling is recommended.