The cave diving team assessed the submarine concept and determined that it was not suitable for the actual passage geometry at Tham Luang. The passages, in the sections where the extractions needed to occur, were not straight flooded channels but curved, narrow, irregular tunnels with protrusions and angle changes that a rigid metal tube could not navigate. Vern Unsworth, the British caver who had pressed for international diving expertise from the beginning, made public comments dismissing the submarine as impractical.
The subsequent social media exchange between Musk and Unsworth escalated into a public confrontation that generated significant attention and that eventually became the subject of legal proceedings. The legal and personal dimensions of that exchange fall outside the scope of this article.
What is relevant to the rescue story is that the submarine episode illustrates a dynamic that runs through many high-profile rescue operations: the attraction of outside parties with resources and ideas who want to contribute but whose contributions, evaluated against the actual operational constraints, are not useful. The rescue command’s handling of the episode — politely receiving Musk’s representative, allowing the submarine to be brought to Thailand, assessing it, and proceeding with the extraction plan they had already chosen — was practically competent even when it was personally uncomfortable.
The extraction plan that worked was the one developed by the people who understood the cave: the cave divers who had been inside it, the hydrologists who had mapped it, the engineer who had designed the pumping infrastructure, the Thai command that had been living with the problem for two weeks.