The European International Submarine Races (eISR), held at the Ocean Basin in Gosport, United Kingdom, challenges university teams to design, build, and race human-powered submarines through a submerged slalom course. Each team must work together to safely navigate their custom-built vessel using only human power and onboard life-support systems, testing the integration of design, control, and endurance. The competition emphasizes innovation, safety, and teamwork in an underwater environment, fostering collaboration and applied problem-solving in marine engineering.

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The International Submarine Races (ISR), held biennially at the U.S. Naval Surface Warfare Center in Carderock, Maryland, challenges student and independent teams from around the world to design, build, and race human-powered submarines through a 100-meter underwater course. Teams must demonstrate hydrodynamic efficiency, reliable propulsion, and coordinated operation to complete the course successfully. The competition promotes creativity, technical excellence, and international collaboration, advancing the next generation of underwater vehicle technology.

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