"Big Seven" refers to the firsts 7 battleships built to carry the biggest naval guns (> 40 cm) allowed by the [[wikipedia:Washington Naval Treaty|Washington Naval Treaty]], namely, the [[:Category:Nagato Class|''Nagato''-class]], [[:Category:Nelson Class|''Nelson'''-class]], and [[:Category:Colorado Class|''Colorado''-class]].
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"Big Seven" refers to the firsts 7 battleships built to carry the biggest naval guns (> 40 cm) allowed by the [[wikipedia:Washington Naval Treaty|Washington Naval Treaty]], namely, the [[:Category:Nagato Class|''Nagato''-class]], [[:Category:Nelson Class|''Nelson''-class]], and [[:Category:Colorado Class|''Colorado''-class]].