Is a lifejacket a reboarding device?

No, a lifejacket is not a reboarding device; it is a personal flotation device designed to keep a person afloat in water. Reboarding devices, such as ladders or platforms, are specifically designed to assist individuals in getting back onto a vessel after falling overboard. While a lifejacket helps keep a person safe and buoyant, it does not aid in reboarding a boat.