Limits RegistryPUBLIC RECORD
Limits RegistryVictor Vescovo piloted the DSV Limiting Factor to 10,934 m (± 3 m) at the bottom of Challenger Deep, Mariana Trench, in 2019 — a hull built to withstand roughly 1,100 times atmospheric pressure. This is the most rigorously documented extreme-pressure engineering achievement of any crewed vessel.
The question, scope, and sources behind this Registry record.
Victor Vescovo piloted the DSV Limiting Factor to 10,934 m (± 3 m) at the bottom of Challenger Deep, Mariana Trench, in 2019 — a hull built to withstand roughly 1,100 times atmospheric pressure. This is the most rigorously documented extreme-pressure engineering achievement of any crewed vessel.
The greatest ocean depth reached by a crewed submersible — chosen as the best-documented real-world extreme-pressure-vessel achievement, since generic industrial pressure-vessel ratings aren't tracked by any record body.
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Permanent ID limitsregistry.com/limits/LR-DEEPEST-CREWED-DIVE
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Limits Registry. LR-DEEPEST-CREWED-DIVE. Deepest dive by a crewed pressure vessel. 2026.