Buoy designed to be thrown to person in water, to prevent drowning
A
lifebuoy
is a life-saving
buoy
designed to be thrown to a person in water to provide
buoyancy
and prevent
drowning
.
[1]
Some modern lifebuoys are fitted with one or more seawater-activated lights to aid rescue at night.
Other names
[
edit
]
Other names for "lifebuoy" include:
- life preserver
- life ring,
[2]
- lifering
- lifesaver
- ring buoy
- donut
- safety wheel
- Perry buoy
- Kisbee ring
[3]
Description
[
edit
]
The lifebuoy is usually a ring- or horseshoe-shaped
personal flotation device
with a connecting line allowing the casualty to be pulled to the rescuer in a boat. They are carried by ships and boats and located beside bodies of water and swimming pools. To prevent vandalism, they are protected by fines (up to £5,000 in the
United Kingdom
) or imprisonment.
In the United States, Coast Guard approved lifebuoys are considered Type IV personal flotation devices. At least one Type IV PFD is required on all vessels 26 feet or more in length.
[4]
In the UK the
Royal Life Saving Society
considers lifebuoys unsuitable for use in swimming pools because throwing one into a busy pool could injure the casualty or other pool users. In these locations, lifebuoys have been superseded by devices such as the
torpedo buoy
,
[5]
a low-drag device developed to be towed by lifeguards to those in danger.
History
[
edit
]
Leonardo da Vinci
sketched a concept for a safety wheel, as well as for buoyant shoes and balancing sticks for walking on water.
[6]
According to various sources the
Knights of Malta
were the first to use cork lifebuoys on their ships.
[7]
In the book
Architectura naval antigua y moderna
(1752) by
Juan Jose Navarro, 1st Marquess of Victoria
, two plates show "circular lifebuoys" and another plate includes a drawing of "a lifebuoy made of cork", called "salvenos". This is the type used systematically by the Knights of Malta on their ships. The lifebuoy was attached to a rope on one side and to the poop of the ship on the other, so that it may be deployed in case anyone should fall into the sea.
[8]
Navarro was
Captain General of the Navy
and is credited with the systematic introduction of the lifebuoy on all ships of the Spanish navy.
In 1803, a device called the "Marine Spenser" from the name of its inventor, Knight Spenser of Bread Street, was described in the
Philosophical Magazine
.
[9]
It was made of "800 old tavern corks" affixed to a band, "covered in canvass, and painted in oil, so as to render it waterproof."
[10]
The invention gained Spenser the honorary silver medal from the
Royal Humane Society
.
-
Leonardo da Vinci
's design sketches for a safety wheel
-
First studies on the lifebuoy illustrated in the
Acta Eruditorum
, 1691
-
Illustration of the prototype of the "Marine Spencer", an early example of lifebuoy, from the Philosophical Magazine, 1803
Gallery
[
edit
]
See also
[
edit
]
References
[
edit
]
External links
[
edit
]
- Media related to
Lifebuoys
at Wikimedia Commons
- The dictionary definition of
life jacket
at Wiktionary