This project analyzes the Deepwater Horizon disaster, focusing on the application of the Diamond Model to understand the project's complexities. The study begins with an executive summary outlining the oil spill and its significance as a major industrial disaster, emphasizing the need for conceptual theories and tools to evaluate the project's dimensions. The introduction identifies the core issues, including the flawed plan and the failure of the blowout preventer (BOP), highlighting the environmental impact and ongoing efforts to limit the oil flow. The analysis then delves into the Diamond Model, examining its dimensions of novelty, technology, complexity, and pace. The study explains how each dimension is used to assess the project's uncertainties and make informed decisions. The project then elaborates on each aspect of the Diamond Model, detailing the different levels of novelty (breakthrough, platform, and derivative), technological uncertainties (super high-tech, high-tech, medium-tech, and low-tech), complexity (arrays, systems, and assembly), and pace (blitz, time-critical, competitive, and regular). Finally, the project justifies the use of the Diamond Model in understanding the Deepwater Horizon disaster, emphasizing its usefulness in making decisions about project management, determining the risks and managing them accordingly. The challenges of the Diamond Model are also briefly discussed, highlighting the adaptive project management approach.