Editing Personal flotation device (section)

==Specifications==
Devices designed and approved by authorities for use by civilians (recreational boaters, sailors, [[canoe]]ists, [[kayak]]ers) differ from those designed for use by passengers and crew of aircraft (helicopters, airplanes) and of commercial vessels ([[tugboat]]s, passenger ferries, cargo ships). Devices used by government and military (e.g. [[water police]], [[coast guard]], [[navy]], [[marines]]) generally have features not found on civilian or commercial models, for example compatibility with other items worn, like a survival vest, bulletproof vest/body armor, equipment harness, rappelling harness, or parachute harness, and the use of ballistic nylon cloth to protect pressurized {{CO2|link=yes}} canisters used for inflating the vest from injuring the wearer if struck by a round from a firearm. The ballistic cloth keeps the fragments from the canister from becoming shrapnel injurious to the user.