This table showing the final disposition of many of the 16-inch gun turrets was derived from an article by Thomas Zolandez published in Warship International, No. 3/2017, pp193-195.
| Class | Ships | Turrets | Fate |
| Tosa | Tosa | Three turrets contracted with Kure Arsenal, and two with Yokosuka Arsenal | No. 1 turret - Toyo Battery at Tsushima Fortress |
| No. 2 turret - Chosito Battery at Pusan Fortress | |||
| Remaining three turrets used to re-arm Nagato and/or Mutsu | |||
| Kaga | Five Turrets contracted with Kure Arsenal | All five turrets used to re-arm Nagato and/or Mutsu | |
| Amagi | Amagi | Five turrets contracted with Kure Arsenal. Only No. 2 completed | No. 2 turret - Unmodified in reserve |
| Akagi | Three turrets contracted with Kure Arsenal, and two with Yokosuka Arsenal. Only 1, 4 & 5 (from Kure) completed | No. 1 turret - Transferred to Army, mounted in Kurosaki Battery at Iki Fortress | |
| No. 4 turret - Modified by Army for coast defence, but kept in reserve and never mounted | |||
| No. 5 turret - Unmodified in reserve | |||
| Nagato | Mutsu | Four turrets fitted on completion. Later replaced by ex-Tosa/Kaga turrets | Original No. 4 turret mounted at Etajima Island (It is still there) |
| Fate of remaining three original turrets not known | |||
| Nagato | Four turrets fitted on completion. Later replaced by ex-Tosa/Kaga turrets | Fate of original four turrets not known |
