I am inspired to design civilian submarines for underwater tourism. I want to design a low-cost submarine that will increase accessibility of the underwater world to people who don't have too much money. I think that new materials are needed that will be cheaper but still serve their function. So I would need to study materials engineering. I would need to know structural engineering, mechanical engineering. But I don't think I can get away with mechanical engineering.There must be a specialization of engineering dedicated to the design of aquatic vehicles that I don't know of yet. Apart from designing the submarine, one engineer can't do all the work, a team is needed to help design and somehow the parts for the submarine need to be made and assembled together in a plant. Then it must be transported to our project site where the submarines will be maintained and sent out to the sea full of children, families, etc. eager to see the ocean. It sounds like I need to utilize the companies who work in the relevant industry. Also, pilots would have to be hired and someone would need to oversee that. So the management of such operations for the purpose of tourism of the ocean, what education is needed to begin such an endeavor?