Humans have been crossing the oceans in vessels since 3000 BC..
Since then, they keep growing
⚫The Blue Marlin, an incredible vessel which can carry 75,000 tonnes-worth of other ships is 712ft long and 138ft deep.
Carrying an oil rig: The ship set a new record in 2004 by delivering BP's 59,500-tonne semi-submersible Thunder Horse platform from Okpo, South Korea, to Corpus Christi, USA.
⚫The Seawise Giant, later named the Mont, was a supertanker that was the longest ship ever built, at 1,504ft.
Fully loaded, its displacement was 657,019 tonnes.
⚫Worlds largest container vessel.
Stretching a quarter of a mile and weighing a mighty 210, 890 tonnes.
The 21,413 TEU OOCL Hong Kong, which can carry up to 21,000 20ft containers.
⚫Antartica/Arctic explorer.
One of the largest and most powerful icebreakers in the world.
Russian icebreaker, Kapitan Khlebnikov.
Monster: A lone human stands next to the Russian icebreaker Kapitan Khlebnikov, specially designed to sail in freezing conditions and break through thick ice.
⚫The Harmony of the Seas, pictured arriving into Southampton, is the biggest cruise ship in the world with a length of 1,188ft, 18 decks and a maximum capacity for 6,780 passengers.
Cost: $1.35 billion (2015).
⚫Hoegh Target, the world’s largest car transporter, can carry 8,500 vehicles(Ro-Ro) including bulldozers, trucks, excavators, tractors and boasts deck space the size of ten football pitches.
Vessel's 14 deck is the size of 10 football fields and it can carry 8,500 vehicles measuring 26 miles if put end to end.
⚫Russian billionaire Andrey Igorevich Melnichenko owns this, one of the world's largest sailing superyachts, with three 300ft masts that stand taller than Big Ben's tower.
It estimated to be worth £360million
⚫The Titanic, at the time the largest of its kind in the world.
Struck a North Atlantic iceberg on April 14, 1912, on its maiden voyage from Southampton to New York City, killing more than 1,500 people.
⚫The 600,000 tonnes, 400m long, 105m high Prelude FLNG facility, the largest offshore facility ever constructed, is nearing completion at the Samsung Heavy Industries (SHI) shipyard in Geoje, South Korea.
Vessel's storage tanks have a capacity equivalent to approximately 175 Olympic swimming pools.
Cost: $10Billion