projecting or extendible structures used for stabilization on aerial devices. cranes. and other vehicles that support elevated or outstretched loads.
outriggers (Wikipedia)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/COLLECTIE_TROPENMUSEUM_Reli%C3%ABf_op_de_Borobudur_TMnr_20025669.jpg/220px-COLLECTIE_TROPENMUSEUM_Reli%C3%ABf_op_de_Borobudur_TMnr_20025669.jpg)
Relief of Borobudur Temple (8th century AD) in Central Java, Indonesia, showing a ship with outrigger
An outrigger is a projecting structure on a boat, with specific meaning depending on types of vessel. Outriggers may also refer to legs on a wheeled vehicle which are folded out when it needs stabilization, for example on a crane that lifts heavy loads.