two-compartment standard

nautical science

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July 14, 2026

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The "two-compartment standard" in naval architecture refers to a safety measure for ships. It dictates that a ship must be able to remain afloat and upright even if two adjacent compartments are flooded due to damage, such as from a collision. This standard is a crucial aspect of ensuring a ship's watertight integrity and preventing catastrophic sinking.12

While a "one-compartment standard" means a ship can survive flooding in a single compartment, the two-compartment standard provides a higher level of safety, particularly for larger passenger vessels. The infamous sinking of the Titanic, which was built to the two-compartment standard but suffered damage to at least five compartments, highlights the importance of this design principle.1

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Damage buoyancy and stability
A two-compartment standard is common for larger passenger-carrying ships—a measure that presumably protects the ship against a collision at the boundary between two compartments. The Titanic, the victim of the most famous sinking in the North Atlantic, was built to the two-compartment standard, but its collision…
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A two-compartment standard is common for larger passenger-carrying ships—a measure that presumably protects the ship against a collision at the boundary between two compartments. The Titanic, the victim of the most famous sinking in the North Atlantic, was built to the two-compartment standard, but its collision…
Read More