1.1Â This guide covers information for designing permanent steel doublers for surface ships that are not classed with any classification society, and not load line certified. It is not intended to supersede any classification or statutory requirements.
1.2Â This guide provides owners, operators, shipyards, and designers with information for designing and using doubler plates so that the damaged structure regains its original local strength.
1.3Â When the steel is to be welded a welding procedure suitable for the grade of steel and intended use or service is to be utilized. See Appendix X3 of Specification A6/A6M for information on weldability.
This guide provides information for designing permanent steel doublers used in surface ships that are not classed with any classification society and not load line certified. It describes the requirements for designing and welding a doubler plate to the damaged portion of the structure so that the damaged structure regains its original local strength. For the welding of steel, the guide prescribes a welding procedure suitable for the grade of steel and intended use or service. The standard covers the applicability of doubler plates, materials and their manufacture, dimensions, workmanship, finish, appearance, and inspection.
| SDO | ASTM: ASTM International |
| Document Number | F2991 |
| Publication Date | Feb. 1, 2013 |
| Language | en - English |
| Page Count | 3 |
| Revision Level | 13 |
| Supercedes | |
| Committee | F25.01 |