Welcome to the 2nd International Workshop on Marine Hydrodynamics Modelling (IWMHM). IWMHM is an annual international forum to discuss basic and applied advances to Marine Hydrodynamics Modelling by either analytical, numerical or experimental approaches. The workshop emphasizes on in-depth and advanced discussions among the participants. The workshop consists plenary sessions and technical sessions with selected contributed talks. Every year, the workshop focuses on a specific area of Marine Hydrodynamics.