What are some of the world s biggest sunken ships (by displacement before they sunk)?

Torrey Canyon 1967

USS Indianapolis 1945

Yamato 1945

How would I know ? If they sank, I would only know what they were supposed to weigh. Maybe some ships sank because they were over loaded. If that happened, the real weight is unknown. Official records of known sunken ships could have been falsified when the ships were loaded. If the insurance company knows the ship was dangerously overloaded,.it doesn't pay the shipping company for their loss. With the cost of a ship and it's cargo, and the lives of the crew at stake. The truth about an over loaded ship would be hidden from everyone. Only a few would really know the truth, and they won't admit it.

The Seawise Giant, a super tanker was sunk off Iran by Iraqi parachute bombs during the Iran - Iraq War. It's fully loaded displacement was 657,000 tons. But after the war ended it was raised, repaired, and renamed the Happy Giant.

The Bismarck, the largest German battleship in World War II

Displacement:

41,700 t (41,000 long tons) standard

50,300 t (49,500 long tons) full load

The 'Lusitania'. A british ocean liner sunk by the dastardly hands of a german u boat in 1915 . ( 1,191 civilians and ocean liner crew lost their lives ).

The Yamato and The Musashi.

titanic