Milwaukee Deep at (), virtually identical with the "Milwaukee"s reading. The existence of deep water to the Atlantic Ocean side of the Caribbean has been known for more than a century. One of the area's earliest soundings was obtained June 12, 1852 by Lt. S. P. Lee, U.S. Navy brig "Dolphin", with a reading of at (). Milwaukee Deep Milwaukee Deep, also known as The Milwaukee Depth, () is the deepest part of the Atlantic Ocean and is part of the Puerto Rico Trench. It has a maximum depth of at least . It is just north of the coast of Puerto
Litke Deep 200 metres deep. The Eurasian Basin stretches from northeastern part of Greenland past the Svalbard archipelago, Franz Josef Land and Severnaya Zemlya to the Taymyr Peninsula. Sometimes the Molloy Deep is mentioned as the deepest point in the Arctic Ocean, this deep however lies in the Fram Strait in the Greenland Sea. The Litke Deep was located in 1955 by the russian icebreaker ”Fyodor Litke” expedition. It is named after russian explorer Fyodor Petrovich Litke. Litke Deep Litke Deep () is an oceanic trench in the Arctic Ocean. It is the deepest known point in the Arctic Ocean. It is