Function analysis and design of a hydrofoiling search and rescue vessel from a user perspective

Abstract: This report covers a function analysis and concept design of a hydrofoil electric search and rescue vessel. It was done in conjunction with the SSRS, Swedish Sea Rescue Society (Sjöräddningssällskapet), as a master thesis at the Royal Institute of Technology. The project had two initial purposes, first to assess the maturity of the hydrofoil technology in conjunction with search and rescue and to conceptualize how a potential rescue vessel using the technology would be designed. The project was done using skills accumulated during five years of studies and experiences within the field of product development and engineering. With the guidance from supervisors and close communications with the SSRS the project started with background research about the organization and adjacent stakeholders. Contextual research, field and user studies was done. The information was then compiled and analyzed which resulted in a conclusion of the maturity of the hydrofoil technology in conjunction with search and rescue and a concept design of an electric hydrofoiling rescue vessel. The final concept was a vessel with raisable hydrofoils, a one pod-motor in the rear and a bow thruster in the front. It had space for three crew members as well as additionally 2-4 passengers. The layout on deck was adjusted to suit the needs of the rescue workers and the people in distress. It was found that an electric hydrofoiling vessel presented some improvements relative to a conventional rescue vessel but complexity, fragility and high need for maintenance ruled it not yet feasible as an alternative.