The video said it was one of the 3 longest ships in the world.
Yes, MOL has built some beasts. So is China Shipping, Cosco Shipping, and Maersk. They are getting into the 16.5K TEU range, and 1,100 feet in length. They now have to get wider and deeper because much more than that length and the wave period would require much stronger scantlings to cope with the stresses.
Gunner
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