Topside Icing - Weight & Moment Allowance
Topside icing allowance per IS Code 2008 Part B §6 for fishing vessels and vessels operating in winter seasonal zones - 30 kg/m² horizontal projected + 15 kg/m² vertical.
Ice mass allowance
12.30t
Vertical moment (t·m)
172.2t·m
Formula, assumptions, and limits
Apply to every loading condition in operating season. Fitted deck cargo adds to horizontal projected area. Windage area for weather criterion grows proportionately.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Horizontally-projected area (deck + walkways) | m² | GA drawing | |
| Vertically-projected area (sides + rails) | m² | profile drawing |