The Island Nations Federation Navy is a division of the Island Nations Federation's military designated for naval warfare and given the location of the nation, the main branch of its military. With bases and garrisons throughout the nation, the Federation navy, when not engaged in warfare, mainly involves itself in the security of ocean routes as well as the capture of pirates. The Federation Navy, operating under the orders of the Obel Maritime Council sometimes undergoes secret missions, usually concerning the securing and retrieving of discovered Rune Cannons. The Federation Navy and the naval branch of the New Armes military, the Armes Western Marine Corps have clashed on more than one occasion in the past.
The flagship of the Federation Navy is traditionally the Lino En Kuldes and its captain is usually the Admiral of the fleet. As of 450, the Admiral of the Federation Navy was Skald Egan and, as such, the navy found itself almost being drawn into the Falenan Civil War on more than one occasion.