We love hearing about custom ROV builds and their backstories. Here is an interesting one:
Student Christian Engler teamed up with friends to build a custom ROV to compete in the 2019 International ROV MATE Competition. Their design then attracted the attention of Swiss Explosive Ordnance Disposal divers and lead to further refinement and development, producing the commercial Proteus ROV.
Full article at: Robohub: From Garage to Swiss Lakes