What was the name of the submarine used to explore mid ocean ridges more closely?

The submarine used to explore mid-ocean ridges more closely is called the "Alvin." This submersible, operated by the Woods Hole Oceanographic Institution, has made numerous deep-sea dives since its launch in 1964, contributing significantly to our understanding of underwater geology and marine Biology. Alvin is known for its ability to reach depths of up to 4,500 meters (about 14,800 feet) and has played a key role in various oceanographic research missions, including the study of hydrothermal vents at mid-ocean ridges.