An edited version of a New England Council (newenglandcouncil.com) report:

“The Woods Hole Oceanographic Institution’s (a New England Council member) human-guided submersible ‘Alvin’ research vessel has made history by reaching a depth of 6,453 meters (about 21,117 feet). The three-person crew guided the submersible in the Puerto Rico Trench, off that island .… Alvin’s success has led to 99 percent of the seafloor being available for the submersible to explore.

“The submersible is well-known around the world for being an icon of excellent scientific data collecting and engineering. ‘Alvin’ is one of the only U.S. submersibles that have the equipment to carry humans and gather scientific data from extreme depths. Since its initial launch, ‘Alvin’ has carried out 5,086 successful dives. Its long history goes back to when Woods Hole scientist Robert Ballard used ‘Alvin’ to explore the wreckage of the HM Titanic. This summer ‘Alvin’ went through an intense series of sea trials overseen by the NAVSEA, an organization responsible for building U.S. Navy ships. The trials permitted ‘Alvin’ to dive to its maximum depth. The next step for ‘Alvin’ will be a two-week National Science Foundation-funded verification expedition to determine if ‘Alvin’ can maintain its ability to support deep-sea scientific research.

“Woods Hole President Peter de Menocal said, “[i]nvestments in unique tools like ‘Alvin’ accelerate scientific discovery at the frontier of knowledge. Alvin’s new ability to dive deeper than ever before will help us learn even more about the planet and bring us a greater appreciation for what the ocean does for all of us every day.”’

Read more from the Woods Hole Oceanographic Institution.

‘Alvin’ goes the deepest yet