Which trench contains the deepest point in the Atlantic Ocean?

The Puerto Rico Trench contains the deepest point in the Atlantic Ocean.

Located north of Puerto Rico, the trench follows a major and complicated plate boundary between the Caribbean and North American regions. It is about 810 kilometres long and is the Atlantic’s most profound submarine feature, despite being far shallower than the deepest trenches of the Pacific.

The trench’s deepest area is commonly called the Milwaukee Deep. The name Brownson Deep is also used for the surrounding seabed, and the two names have sometimes been applied to overlapping parts of the same depression. Measurements vary by survey and location, with modern documented depths ranging from roughly 8,376 to 8,740 metres.

The South Sandwich Trench is the strongest alternative-looking answer because it is also in the Atlantic region. However, it reaches about 8,266 metres, making it the second-deepest Atlantic trench. The Cayman Trench is much shallower, while the Romanche Trench lies near the equator and does not approach the Puerto Rico Trench’s maximum depth.