The river that deposits the greatest amount of sediments in the ocean is the Amazon River.

Here's why:

* Massive Drainage Basin: The Amazon River has the largest drainage basin in the world, covering approximately 7,050,000 square kilometers (2,722,000 square miles). This vast area provides a huge source of sediment.

* High Rainfall: The Amazon basin receives abundant rainfall, leading to significant erosion and the transport of large quantities of sediment.

* Sediment Load: The Amazon River carries an estimated 1.2 billion tons of sediment to the Atlantic Ocean annually. This is significantly more than any other river in the world.

While other rivers like the Yangtze, Ganges, and Mississippi also carry substantial sediment loads, the Amazon River's sheer size and the amount of sediment it carries make it the champion in this category.