One of the promising types of renewable energy resource that has potential applications in the Arab World is proposed and described in this article. Known as ocean thermal energy conversion (OTEC), its feasibility is investigated for the Red Sea and the Arabian GulflGulf of Oman. Data on thermal gradients are surveyed, collected, and reported. Promising parameters have been identified for some specific locations along these coastal waters. The proposed system can serve the dual purpose of providing electric power and desalinated water, which is needed by the Arab World. Construction strategies for the OTEC systems are introduced. Building plant-ship for utilizing the generated power in the production of hydrogen is recommended. Thus energy could be transported as LH2(liquid hydrogen), MeOH (methanol), or NH3(ammonia) for end-use consumption or export.