4. Odyssey VII by Woods Hole Oceanographic Institution

With its remarkable depth capabilities of 11,000 meters, which lets it reach the ocean’s lowest places, the Odyssey VII pushes the frontiers of deep-sea research. Using pressure-resistant ceramics and cutting-edge composite materials, this technical wonder can sustain pressures far above 1,000 atmospheres. Chemical analysers, sub-bottom profilers, and multi-beam sonar among other highly precise sensors make up the vehicle’s suite. Its innovative thruster arrangement gives remarkable manoeuvrability in difficult deep-sea settings, while its autonomous decision-making system lets it modify mission parameters depending on real-time data analysis. An indispensable instrument for deep-ocean research and exploration, the modular payload bay of the Odyssey VII can hold up to 100 kg of specialist scientific equipment.