02/05/2026
Basic Things To Know ⚓️✅
The image shows the Plimsoll Mark (also called the Load Line Mark) on a ship’s hull. It indicates the maximum safe loading level of the vessel under different water conditions.
• The circle with a horizontal line is the main load line symbol.
• The letters beside it (like N K) identify the classification society that certified the ship.
• The horizontal lines marked:
• TF – Tropical Fresh Water
• F – Fresh Water
• T – Tropical Seawater
• S – Summer Seawater (main reference)
• W – Winter Seawater
Purpose:
• Prevents overloading of the ship.
• Ensures stability, buoyancy, and safety at sea.
• Takes into account water density and seasonal conditions.
In short, the Plimsoll mark tells how deep a ship can safely sit in the water under various conditions.
