Port-facility / ship security level (1-3) declaration per ISPS Code Part A - the baseline for security measures.
Formula
$$ \text{Level} = f(\text{threat}) $$Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $Level$ | MARSEC / ISPS level 1-3 | - | flag or port state |
Sources
- ISPS Code + SOLAS XI-2.