1. DeepFlight I:
• Operational Diving Depth: Up to 4,000 meters (13,123 feet)
2. DeepFlight II:
• Operational Diving Depth: Up to 4,000 meters (13,123 feet)
3. DeepFlight III:
• Operational Diving Depth: Up to 4,500 meters (14,764 feet)
DeepFlight III marked a notable milestone when it successfully completed a dive into the Puerto Rico Trench on June 9, 2009, reaching a depth of 4,481 meters (14,698 feet).
These values represent the previously achieved diving depths during specific missions but may not necessarily indicate fixed limitations. Advancements in design, engineering, and operational capabilities could allow for even deeper dives in the future.