Typical Values by Vessel Type (+1)
Typical Values by Vessel Type
| Vessel Type | Roll Damping (% critical) | Notes |
|---|---|---|
| FPSO | 5-10% | With bilge keels |
| Tanker | 3-8% | Varies with loading |
| Semi-submersible | 8-15% | Large radiation damping |
| Spar | 3-6% | Strake-dependent |
| Barge | 2-5% | Low damping |
By Loading Condition
| Condition | Typical Adjustment |
|---|---|
| Full load | Base value |
| Ballast | -20% to -30% |
| Partial load | -10% to -20% |
| Transit | +10% to +20% (hull exposure) |