Load Line - Seasonal Marks Check
Load-line seasonal mark (S, W, T, F, TF, WNA) applicable for the ship's voyage - a function of Load Line Zone and date.
Applicable mark
T
Formula, assumptions, and limits
Zones defined in Load Line Convention 1966 Annex II - seasonal boundaries vary by latitude and month. Tropical mark allows deeper loading than Summer by 1/48 × summer draft. WNA for ships ≤ 100 m L in winter North Atlantic.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Load line zone | - | Load Line Convention 1966 Annex II |