The clip, which Youtube.com and Cruise and Cargo Ships offer to your attention is dedicated to the largest oil tanker built ever. The deadweight of the tanker is 565,000 metric tons, which is the largest mass sailing through the oceans. The building of this vessel was very important for engineer development, but not so profitable for the ship-owner, and that is the main reason this ship to be used as storage-tank near Qatar. See the video of Knock Nevis here:

  The ship, which is the largest built oil tanker ever in now known as Knock Nevis. The better knock name of the ship is Jahre Viking, which is the name given to the ship, while sailing and the name which is very good known. If you want to see something very interesting about this ship, this is the video that will give you too much information. Otherwise, you may just see the video and wonder about the measurements of the "Seawise Giant". This is clip which is very good and I liked t very much, so see it from here: