Largest object sunk by a submarine

Largest object sunk by a submarine
Who
Shinano
What
72890 tonne(s)/metric ton(s)
Where
Not Applicable
When
29 November 1944
The largest target ever sunk by a submarine was the Japanese aircraft carrier Shinano (72,890 tonnes or 160.9 million lb), sunk by USS Archerfish (Cdr Joseph F. Enright, USN) on 29 November 1944.