Jumboization is a technique in
shipbuilding
Shipbuilding is the construction of ships and other floating vessels. It normally takes place in a specialized facility known as a shipyard. Shipbuilders, also called shipwrights, follow a specialized occupation that traces its roots to befor ...
consisting of enlarging a
ship
A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying cargo or passengers, or in support of specialized missions, such as defense, research, and fishing. Ships are generally distinguished ...
by adding an entire section to it. By contrast with refitting or installation of equipment, jumboization is a long and complex endeavour which can require a specialized
shipyard
A shipyard, also called a dockyard or boatyard, is a place where ships are built and repaired. These can be yachts, military vessels, cruise liners or other cargo or passenger ships. Dockyards are sometimes more associated with maintenance a ...
.
Enlarging a ship by jumboization allows an increase in its capacity and revenue potential without needing to purchase or build an entirely new ship. This technique has been used on
cruise ship
Cruise ships are large passenger ships used mainly for vacationing. Unlike ocean liners, which are used for transport, cruise ships typically embark on round-trip voyages to various ports-of-call, where passengers may go on tours known as "s ...
s and
tankers, as well as smaller vessels like sailing or fishing ships.
Guy Saillard
/ref>
Methods
Large ships often have a long midsection with a uniform profile. In such cases, the ship is cut in two pieces and an additional section is inserted in between. This operation must be performed in a drydock
A dry dock (sometimes drydock or dry-dock) is a narrow basin or vessel that can be flooded to allow a load to be floated in, then drained to allow that load to come to rest on a dry platform. Dry docks are used for the construction, maintenance, ...
.
On large ships, the additional sections are typically 20 to 30 metres long, consisting of an oil tank, a cargo ship hold, or a group of cabins, depending on the type of ship. The tanker ''Seawise Giant
TT ''Seawise Giant''—earlier ''Oppama''; later ''Happy Giant'', ''Jahre Viking'', ''Knock Nevis'', and ''Mont''—was a ULCC supertanker that was the longest self-propelled ship in history, built in 1974–1979 by Sumitomo Heavy Industries i ...
'' became the largest ship in the world after her jumboization.
Smaller ships are usually jumboized by replacing the entire bow or stern
The stern is the back or aft-most part of a ship or boat, technically defined as the area built up over the sternpost, extending upwards from the counter rail to the taffrail. The stern lies opposite the bow, the foremost part of a ship. Ori ...
section of the ship. This is done because the shape of their hull is usually incompatible with the previous method.
References
{{reflist
External links
Jumboisation/Body Swapping
at Keppel Shipyard
Shipbuilding