The situation concerning the ocean has changed greatly in recent years, so that it is no longer sufficient to concentrate on promoting shipbuilding and marine industries. Instead, there is an increasing need to address the ocean from a broader perspective and respond to various international problems across the soft-hard spectrum, not only through technological development but also through policy support and international cooperation and coordination. While OPRI has made many contributions to Japan's maritime transport, shipbuilding, and related industries, we are now strengthening our initiatives across a wide range of ocean fields. The fruits of these efforts will support our country's policies as well as international cooperation. We here introduce a selection of our research activities.