After completing its 5,075th dive to a record 5338 meters (17,513 feet), post-dive visual inspection of Alvin revealed unexpected damage to several attachment points of the specialized syntactic foam used…

The process of certifying Alvin to dive to 6500 meters doesn’t mean the sub simply dives to its new maximum depth and that’s it. We are required to move in…

On Tuesday, we got word that we have a location to get back on the road to 6500 meters: the east wall of Mona Canyon northwest of Puerto Rico. And…

After a successful five to 1,500 meters, Alvin begins a transit south to continue test dives closer to Puerto Rico.

The first two open-water dives are in the book, with the sub descending to 100 meters Wednesday and Thursday to complete Phase 2 of Sea Trials. As much as the…

Alvin passed another critical milestone yesterday with its first untethered post-overhaul dives.

Alvin completes incline test, paving the way for open ocean dives. How simulated dives debug Alvin’s software before actual dives take place.

Alvin finishes in-water tests of electrical and mechanical systems and dives briefly to test the variable ballast system.

Alvin began its road back to diving with a test of its buoyancy.