Nagato as of 1931:
During the summer of 1926 a Yokosuka E1Y2 floatplane was carried on board as the main reconnaissance floaplane. Because no catapult was avaliable a boom for it's handling was fitted on the starboard side, just aft of the mainmast. In december 1928 Nagato became a training ship, visting Hong Kong with her sister Mutsu during the same month, then in May 1929 she acted as a guest ship for Emperor Showa (Hiroito) during his return from the Imperial Cruise. On december 1st 1930 she was reassigned to BattleshipDivision1, serving exacly for a year before beign redesignated as Reserve Ship.
Between 1927 and 1931 some other modifications were implemented: The RDF equipment and navigation lights set on top fo the main rangefinders was modified, the wireless aerials were also replaced, the four above water torpedo tubes were removed, although their hatches were kept as they were. The navigation lights were added ont he mainmast and the two lower levels of the aft superstructure were enclosed.