Commercial submersible tours of the wreck called Titanic Survey Expeditions were planned for 2019 by OceanGate, Inc.,[74] but it was later postponed to summer 2021.[75] In August 2019, a team of explorers and scientists used deep-submergence vehicle Limiting Factor to visit the wreck, marking the first crewed dive to the ship in 14 years. Five dives took place over a period of eight days. The team used specially adapted cameras to capture the wreck in 4K resolution for the first time, and dedicated photogrammetry passes were performed to create highly accurate and photoreal 3D models of the wreck.