[header] How to save yourself from drowning in a shipwreck [title] Wear a flotation device. [step] Hypothermia, shock, injury and exhaustion mean you cannot be guaranteed that you will swim to safety if an accident did happen. Wear a properly fitted life jacket that supports the neck and will keep your face out of the water if you fall unconscious. 
[title] Get away from anyone else in the water. [step] Immediately after the accident is when you, as a strong swimmer, are in most danger.