Unkai Maru

Unkai Maru is a beginner-friendly wreck dive in Truk Lagoon, Chuuk, Micronesia, featuring a Japanese cargo vessel that provides an accessible and visually rewarding wreck experience. The ship sits upright with the shallowest sections within easy reach of recreational divers. The wreck's deck structures, masts, and cargo handling equipment are clearly visible and beautifully decorated with coral growth. Schools of tropical fish — fusiliers, snappers, and batfish — swarm around the superstructure, creating vibrant scenes. The holds reveal wartime cargo partially reclaimed by nature. Unkai Maru's combination of shallow access, rich marine life, and WWII history makes it an essential early dive for visitors exploring Truk Lagoon's underwater museum.