Alvin (DSV-2) is a crewed deep-ocean research submersible owned by the United States Navy and operated by the Woods Hole Oceanographic Institution (WHOI) in Woods Hole, Massachusetts. The original vehicle was built by General Mills' Electronics Group in Minneapolis, Minnesota. Named to honor the prime mover and creative inspiration for the vehicle, Allyn Vine, Alvin was commissioned on June 5, 1964.
Alvin in 1978, a year after first exploring hydrothermal vents. The rack hanging at the bow holds sample containers.
Emergency separation
General layout
The sunken Alvin on the ocean bottom in June 1969, photographed by USNS Mizar (T-AGOR-11).
A submersible is an underwater vehicle which needs to be transported and supported by a larger watercraft or platform. This distinguishes submersibles from submarines, which are self-supporting and capable of prolonged independent operation at sea.
Retired modern submersible Star III of Scripps Institution of Oceanography
Ictineu 3 is a crewed submersible with a large semi-spheric acrylic glass viewport and is capable of reaching depths of 1,200 m (3,900 ft).