An international commission for maritime history is a group of people from different countries who come together to talk about the history of the sea and ships. They study how people used boats and ships in the past, how they discovered new lands, and how they traded with each other. They also talk about how ships were built, how they sailed the oceans, and how they fought battles at sea. This group is really interested in learning more about the world's oceans and the many important ways they have shaped history.