Survival in a watertight chamber inside a sinking ship depends on the strength of the chamber's walls against increasing ocean pressure. Calculating pressure at various depths reveals the immense forces involved, indicating that typical chambers would likely implode before reaching the ocean floor. Even submarines, designed for deep-sea exploration, can experience implosion if they exceed their depth limits. Only specially engineered vessels, such as the Aluminaut, are capable of withstanding extreme underwater pressures. Ultimately, the structural integrity of the chamber is crucial for survival in such dire conditions.