Alvin, which is operated by Woods Hole Oceanographic Institution (WHOI), has been in operation since 1964. The human occupied vehicle is capable of reaching depths of 4,500 meters, carrying two scientists and one pilot for each dive.
Human Occupied Vehicle Alvin
Image courtesy courtesy of Woods Hole Oceanographic Institution. Download larger version (jpg, 473 KB).

Alvin, which is operated by Woods Hole Oceanographic Institution (WHOI), has been in operation since 1964. The human occupied vehicle is capable of reaching depths of 4,500 meters, carrying two scientists and one pilot for each dive.

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