대한조선학회지 (Bulletin of the Society of Naval Architects of Korea)
- 제18권3호
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- Pages.59-63
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- 1981
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- 1225-1178(pISSN)
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- 2765-2858(eISSN)
턴트리 데릭크
Turn-Tree Derrick
초록
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.
키워드