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While attacking the Airfield Princess during the final episode, Nagato and
Mutsu turn up midway through the fight. After firing a volley of shells at the
target, Nagato says out loud, "Don't underestimate the power of the Big
Seven!"

![Nagato](https://i.gyazo.com/8b669942a816adec7ddb4c977383ff0f.png)

What significance does this hold? There are more than seven ships present, so
it's unlikely to be that, and the ship _Nagato_ has more than seven guns both
in the anime and in real life.

So, what is Nagato referencing when she mentions the 'Big Seven'?


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kantai-collection
What is meant by Nagato when she mentions the 'Big Seven'?


This is a real life reference, and not an in-series one. The 'Big Seven'
refers to the 7 battleships that, under the [Washington Naval
Conference](https://en.wikipedia.org/wiki/Washington_Naval_Conference), could
mount 16 inch guns. As such, they were the [only battleships to have a 16"
armament prior to the outbreak of World War
II](http://www.reddit.com/r/Warships/comments/3aazbr/big_seven_battleships_on_wwii/csax38o),
and the [dissolution of the
treaty.](https://en.wikipedia.org/wiki/Washington_Naval_Conference#Termination)

Two of the seven ships feature in the Kancolle anime and browser game
([Nagato](http://kancolle.wikia.com/wiki/Nagato) and
[Mutsu](http://kancolle.wikia.com/wiki/Mutsu)), with the other five being from
the US and UK. They were:

  * [Nagato](https://en.wikipedia.org/wiki/Japanese_battleship_Nagato) (Imperial Japanese Navy)
  * [Mutsu](https://en.wikipedia.org/wiki/Japanese_battleship_Mutsu) (Imperial Japanese Navy) 
  * [HMS Nelson](https://en.wikipedia.org/wiki/HMS_Nelson_\(28\)) (Royal Navy) 
  * [HMS Rodney](https://en.wikipedia.org/wiki/HMS_Rodney_\(29\)) (Royal Navy) 
  * [USS Colorado](https://en.wikipedia.org/wiki/USS_Colorado_\(BB-45\)) (US Navy) 
  * [USS Maryland](https://en.wikipedia.org/wiki/USS_Maryland_\(BB-46\)) (US Navy) 
  * [USS West Virginia](https://en.wikipedia.org/wiki/USS_West_Virginia_\(BB-48\)) (US Navy)

This quote also features in the browser game of _Kantai Collection_ during the
'Battle Start' event, where Nagato says the same quote: "Don't underestimate
the power of the Big Seven"

Additionally, in the _Kantai Collection_ set of the card game _Weiβ Schwarz_ ,
there is a card titled "Do not look down on the power of the Big 7", which
features a picture of Nagato, as well as the aforementioned quote:

![Card](https://client-
cdn.crystalcommerce.com/photo/bigncollectibles/file/7fe02d70fcf611e484cf41c8334958d8/medium/161r.jpg)


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