Maritime Self-Defense Force Museum

The Maritime Self-Defense Force Museum (海上自衛隊 佐世保史料館), also known as the Sasebo Historical Museum, is a must-visit for anyone interested in Japan’s naval history and modern maritime defense. One of its most striking features is a full-sized decommissioned submarine displayed outside the museum—offering a rare opportunity to see a real vessel up close and learn what life was like aboard. Inside, multi-floor exhibits trace the evolution of the Japan Maritime Self-Defense Force and highlight Sasebo’s historical importance as a key naval base. Artifacts, photographs, ship models, and uniforms help tell the story of Japan’s maritime strategy from the postwar period to the present day.

Conveniently located near Sasebo Port, this free museum welcomes visitors of all ages—from families and school groups to military enthusiasts and curious travelers. Interactive exhibits, including simulators and hands-on displays, make the experience both engaging and accessible. The observation deck offers sweeping views of the harbor and docked vessels, adding a real-world connection to the museum’s themes. Whether you're exploring the evolution of Japan’s navy or diving into the mechanics of maritime defense, the museum delivers an immersive, educational experience in a compact and easy-to-navigate setting.