Single slack-tank FSC for a rectangular tank.
Formula
$$ i = \tfrac{l \cdot b^3}{12}, \quad \text{FSC} = \frac{i \cdot \rho_\text{liquid}}{\Delta} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $l, b$ | Tank length and breadth at free surface | m | tank plan |
| $\rho_\text{liquid}$ | Liquid density | t/m³ | cargo/ballast manifest |
| $\Delta$ | Ship displacement | t | loading computer |
| $i$ | Second moment of tank free surface | m⁴ | result |
| $FSC$ | Effective GM loss | m | result |
Sources
- IMO IS Code Part B Ch.3.
- Derrett & Barrass Ch.13.