At 0°C water solidifies, increasing its volume by 9%. This specific property of ice is attributed to the airy composition of its crystalline network. It is also the reason why ice floats in water.
The Titanic might have been a victim of the phenomenon that is the expansion of water upon solidifying (the materials in its composition expand upon melting, except for cast iron and bismuth). It is hypothesised that, due to the heavy fog, the ship’s captain couldn’t see the immense iceberg floating ahead in time, thus sinking the entire ship.