Imperial Izumese Navy

The Imperial Izumo Navy (IIN, Izugo: 大出雲帝國海軍 Dai-Izumo Teikoku Kaigun, literally "Navy of the Greater Izumese Empire") is the official navy of Izumo. It is the branch of the Imperial Izumo Military responsible for sea-based military operations and the total defence of the Izumo Imperial Waters and Home Islands. It is the second-largest of the three services in the Imperial Izumo Military. It is one of the largest navies in the world.

The Imperial Navy numbers 396,602 personnel and operates 174 ships, of which 141 are combat vessels. It also operates a marine force known as the Special Naval Landing Force.