What are the advantages of corrugated bulkheads and how do you sketch and describe a corrugated transverse watertight bulkhead?
Short answer
| Advantage | Basis |
|---|---|
| No additional stiffeners required | UK MSIS38 Part B Ch11 §11.3.4 |
| Classification society approved | IACS UR S18, UR S19 |
| Weight efficient | Corrugated geometry |
| Better buckling resistance | Geometry |
| Simpler fabrication | Fewer components |
| Large panel suitability | Prefabrication |
- No stiffeners needed: corrugated shape gives stiffness
- Classification acceptance: IACS UR S18 and S19
- Weight saving: optimized material via geometry
- Fabrication: fewer components and welds
- Buckling resistance: superior under compressive and lateral loads
- Large panels: prefabricated, fewer joints
- Description: vertical corrugations tank-top to deck, trapezoidal, watertight
- Installation: welded to side shells, deck, bottom
- Location: transverse subdivision, e.g. between cargo holds
- EOW check: verify watertight integrity, report defects, record in PMS
Full answer
The full answer explains each point step by step, with the regulations and figures behind it and the discussion from other candidates. It is in the MEO Class IV section of the Marine One forum, open to members enrolled for the MEO Class IV exam.