What is the largest ocean vessel?

The title of "largest ocean vessel" depends on how you define "largest." Here are a few contenders:

By Gross Tonnage:

* MSC Irina: This container ship, built in 2022, boasts a gross tonnage of 243,461 GT.

* MSC Irina and its sister ships, the MSC Maya and MSC Tara are currently tied for the title of the largest container ship in the world.

By Length:

* Seawise Giant: Though no longer in service, the Seawise Giant (originally known as the Jahre Viking) was the longest ship ever built at a length of 458.45 meters (1,504 feet). It was scrapped in 2010.

By Displacement:

* Knock Nevis: This very large crude carrier (VLCC) is the largest ship ever built by displacement, weighing 564,763 tonnes. It is now a floating oil storage and offloading facility.

By Capacity:

* Pioneering Spirit: This semi-submersible crane vessel is designed to lift and install massive structures like oil rigs. It holds the record for the largest lifting capacity of any vessel, able to lift up to 48,000 tonnes.

It's important to note that the concept of "largest" can be subjective. While MSC Irina is currently the largest ship in terms of gross tonnage, it's not the longest or the heaviest.