Bulletin of the Society of Naval Architects of Korea (대한조선학회지)
- Volume 18 Issue 3
- /
- Pages.59-63
- /
- 1981
- /
- 1225-1178(pISSN)
- /
- 2765-2858(eISSN)
Turn-Tree Derrick
턴트리 데릭크
Abstract
With substitution with a delicate turn-tree instead of a long permanent cross-tree that is usally located on the derrick post, it is possible to get a large working range of the slewing angle 240 degree and also to decrease the slewing time of the derrick boom, comparing to the exisiting cargo gear system which has the same capacity of slewing winch.
Keywords