Jump to navigation Jump to search
- (nautical) A form of derrick, consisting of three poles and a block and tackle, used to hoist and lower heavy weights, especially the masts of sailing ships.
- 1979 August, Michael Harris, “A line for all reasons: the North Yorkshire Moors Railway”, in Railway World, pages 412, 414:
- Apart from its unique public viewing gallery, the depot features 40-ton capacity shear legs which will be complemented shortly by an overhead lifting crane.
device for lifting heavy weights