Type IV
ring buoy
Anything near to hand that will float and support him. Ideally, a Coast Guard approved Type IV floatation device.
A type V (5) PFD is a Special use, or windsurfing PFD.
offshore PFD
mooring buoy
Type, I, II, or III PFD
A characteristic of a type 3 PFD is that it will turn a passed out person face up.
Life Buoy
The main advantage of type IV PFD is that it is designed to be thrown to someone in trouble.
A characteristic of a type 3 PFD is that it will turn a passed out person face up.
A Type III PFD will not turn most unconscious wearers face-up