The core ideas of our research are to ensure safety, to enable sustainability through advanced solutions and to focus on the first principles of applied mechanics (e.g. hydrodynamics and structures), statistical methods and systems engineering. Our marine technology research investigates the responses and strength of ships in a complex physical environment where ice- and wave-induced loads are present. We also investigate the system-level issues at the scales of shipping systems and fleets as well as individual ships and their subsystems. The focus is on passenger and ice-going ships and on autonomous ships. In arctic marine technology, we study the behaviour of ships and structures in ice. Arctic marine research focuses on ice loads on ships and structures, on ship performance and on ship safety. The group studies these topics by conducting extensive full-scale trials onboard ice-going ships, by utilising the Aalto Ice Tank and by developing theoretical models for e.g. ice load stochasticity and ultimate strength of structures.