1. Prelude FLNG

Prelude is the biggest ship of the world ever built till present. A hull longer than the Empire State Building is tall, was launched in South Korea in December 2013. Measuring 488 m (1,601 ft) long and 74 m (243 ft) wide, the hull belongs to Shell’s Prelude floating liquefied natural gas (FLNG) facility, which is the largest floating facility ever built. More than 260,000 tonnes of steel is used in its construction. In operation, it would weigh more than 600,000 tonnes; more than five times the weight of the largest aircraft carrier.