Bailing is the process of removing water from a vessel.

Hand bailers

A hand bailer is a device used for manually removing water which has entered a vessel. In the simplest case, it is merely a smaller container which can be filled and then emptied. This kind of device has been in use since early times. It is still in use on small

boat A boat is a watercraft of a large range of types and sizes, but generally smaller than a ship, which is distinguished by its larger size, shape, cargo or passenger capacity, or its ability to carry boats. Small boats are typically found on inl ...

s and

raft A raft is any flat structure for support or transportation over water. It is usually of basic design, characterized by the absence of a hull. Rafts are usually kept afloat by using any combination of buoyant materials such as wood, sealed barrel ...

s, though some are ''self-bailing''. Some regulations require either or both forms of bailing.ISAF (International Sailing Federation), liferafts File:Nydam.5.jpg,

Iron Age The Iron Age is the final epoch of the three-age division of the prehistory and protohistory of humanity. It was preceded by the Stone Age (Paleolithic, Mesolithic, Neolithic) and the Bronze Age (Chalcolithic). The concept has been mostly appl ...

hand bailer from

Nydam Mose The Nydam Mose, also known as Nydam Bog, is an archaeological site located at Øster Sottrup, a town located in Sundeved, eight kilometres from Sønderborg, Denmark. History In the Iron Age, the site of the bog was a sacred place, where the wea ...

File:Auskjer.JPG, Norwegian "auskjer", traditional hand bailer File:RK 1701 1154 Ösfass.jpg, modern plastic hand bailer

Self bailers

For some modern types of

dinghy A dinghy is a type of small boat, often carried or towed by a larger vessel for use as a tender. Utility dinghies are usually rowboats or have an outboard motor. Some are rigged for sailing but they differ from sailing dinghies, which ...

s in sailing sports hand bailers can be obsolete when they are equipped with self bailers, sometimes also called automatic bailers. Self-bailing boats are shaped so that they will drain completely if filled with water; powered by the

venturi effect The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section (or choke) of a pipe. The Venturi effect is named after its discoverer, the 18th century Italian physicist, Giovanni Battista V ...

and the motion of the boat, they are distinct from the powered

bilge pump A bilge pump is a water pump used to remove bilge water. Since fuel can be present in the bilge, electric bilge pumps are designed to not cause sparks. Electric bilge pumps are often fitted with float switches which turn on the pump when the bilg ...

s used on non-self-bailing boats. File:Lenzklappe 05.JPG, Self bailer, rear type File:Lenzklappe außen.JPG, Self bailer, bottom type outside the boat File:Lenzklappe innen.JPG, Self bailer, bottom type inside the boat File:EB1911 - Life-Boat Fig. 11.jpg, Plans for a 1911 self-bailing lifeboat. Note that the deck is higher than the waterline, so that it can drain.

References

{{Reflist

Hand bailers

Self bailers

References

See also