Among other things, it can be a personal flotation device (life jacket)
The Personal Flotation Device (PFD) is seriously recommended when the weather is rough.
A personal flotation device is a life jacket or buoyant device worn by a person to help them float in water. It helps in water safety by providing buoyancy to keep the wearer afloat and prevent drowning in case of an accident or emergency in the water.
A life jacket In the US, that would be a US Coast Guard approved Personal Flotation Device (PFD).
A personal flotation device approved by the U.S. Coast Guard. They're required if you're out on a boat most places.
The recommended type of flotation device for a 20-pound child is a properly fitted life jacket approved by the U.S. Coast Guard.
A personal flotation device (abbreviated as PFD; also referred to as a life jacket, life preserver, Mae West, life vest, life saver, cork jacket, buoyancy aid or flotation suit) is piece of equipment designed to assist a wearer, who may be either conscious or unconscious, to keep afloat.PFDs are available in different sizes to accommodate variances in body weight. Designs differ depending on wearing convenience and level of protection.
A damaged life jacket should be replaced.
The personal flotation device that resembles a keyhole shape when laid out flat is known as a "life vest" or "life jacket." This design typically features a central opening for the head and armholes on either side, resembling a keyhole. These vests are designed to provide buoyancy and keep the wearer afloat in water, enhancing safety during water activities.
The type of personal flotation device (PFD) with the greatest amount of buoyancy is typically the Type I PFD, also known as an offshore life jacket. These devices are designed for rough or open waters and provide maximum buoyancy, often exceeding 22 pounds of flotation. They are constructed to keep a person’s head above water even when unconscious, making them the safest choice for extreme conditions.
A standard lifejacket
In Canada, you are required to carry one Canadian-approved life jacket or personal flotation device (PFD) for each person on board your boat. Additionally, there must be at least one life jacket or PFD that is appropriate for each person’s weight and size. It's essential that these devices are easily accessible and in good condition to ensure safety on the water.