Milwaukee Deep, [ 27,493 feet (8,380 m) ] in the Puerto Rico Trench, is the deepest point in the Atlantic Ocean.!
Challenger Deep, [ 10,916 m (35,814) ] in the Mariana Trench, is the deepest point in the Pacific Ocean.!
It is also the deepest point on earth.! !
Both low points are named for the ships that discovered them while doing depth soundings.
The Omaha class cruiser USS milwaukee (third of 5 US Navy shiops with that name) found its depth in the Atlantic on Feb 14th, 1939.
The British ship HMS Challenger found its depth in the Pacific in 1873.!
BTW - The Java Trench [ 12,740 feet (3,883 meters) ] is the deepest point in the Indian Ocean.!
Now you know more stuff...