Editing Personal flotation device (section)

=== Admiralty Pattern 14124 inflatable life ring ===
The Admiralty Pattern 14124 inflatable life ring was the main life preserver issued to British sailors at the start of World War&nbsp;II. It provided about {{convert|8.5|lb(f)|N}} of buoyancy. Its inherent flaw, and an issue with many life preservers at the time, was that it did not keep the wearer's head back out of the water while they were floating. This meant if they went unconscious they would roll forward and end up face down in the water and drown.<ref>{{Cite book |last=The Research and Technology Organisation (RTO) of NATO |title=Survival at Sea for Mariners, Aviators and Search and Rescue Personnel |publisher=NATO |year=2008 |isbn=978-92-837-0084-5 |pages=9B–4}}</ref>