A Finnish shipyard has handed over the world’s largest cruise-liner to its American buyer. Costing 900 million euros, ‘Oasis of the Seas’ is now owned by US company Royal Caribbean.The liner was constructed by STX Finland – part of a larger South Korean shipbuilder. Rising a mammoth 72 metres above sea-level, it’s bigger than it’s nearest rival by 40 per cent. There’s space onboard for 2,000 crew and over 6,500 passengers. Some of them will enjoy the stylish and luxurious cabins. But there’s more to do than just relax in bed or lounge by the pool. There’s an auditorium capable of handling a Broadway musical. Passengers can enjoy diving shows at the Aquatheatre or stroll in a park. But the centre-piece is the Royal Promenade – full of boutiques, bars and bistros.