Boom Butt Section
AssemblyLower boom section carrying the foot pin and the topping-rope back stay. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Boom Butt Section
3 top-level lines as of r45005| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Mast Chord Angle | derrick-crane-chord-angle | 4× | 4 | · | part |
| 2 | Lacing Bar | derrick-crane-lacing-bar | 20× | 20 | · | part |
| 3 | Fastener Set | fastener-set | 1× | 1 | · | part |