BS MA 81:1980
Current
The latest, up-to-date edition.
Specification for ships\' derrick fittings
Hardcopy , PDF
English
28-11-1980
Foreword
Specification
1. Scope
2. References
3. Terminology
4. Axial and permissible loads
5. Nominal sizes
6. Materials
7. Construction and quality of manufacture
8. Testing, inspection and certification
Table
1. Recommended materials
Figures
1. Typical derrick rig arrangement showing locations
of fittings
2. Gooseneck bearing assembly
3. Topping swivel assembly
4. Head fittings
5. Heel fittings
6. Heel cross-pins
7. Gooseneck pins
8. Gooseneck bearing brackets
9. Heel blockholders
10. Retaining rings and retaining pins for goosenecks
11. Topping swivels and locating pins
12. Topping swivel bearing brackets
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