Still-Water Bending Moment (IACS UR S11)
IACS UR S11 permissible still-water bending moment (hogging and sagging) as a function of L, B and Cb.
SWBM (sagging)
-1,233,024,000kN·m
SWBM (hogging)
1,375,296,000kN·m
Formula, assumptions, and limits
The sign convention treats sagging negative (deck in compression, keel in tension). C1 is the IACS wave coefficient depending on L (see Symbol legend). Loading-computer still-water moments must not exceed these values.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Wave coefficient (L-dependent) | - | IACS UR S11 | |
| Length between perpendiculars | m | ship particulars | |
| Beam | m | ship particulars | |
| Block coefficient at SLWL | - | hydrostatic table | |
| Still-water bending moment | kN·m | result |