Originally intended as sister ships of the preceding
Fusō class, the Ise-class battleships of the
Imperial Japanese Navy were considered sufficiently different to warrant separate classification. Among the differences were a shorter foredeck, a more closely-grouped secondary armament (with the majority of the forward guns set further astern than in the Fusōs), a different arrangement of the primary turrets (though the cumbersome six-twin arrangement was retained) and more closely-spaced funnels and uptakes. Like most if not all battleships of their era, they retained the soon-to-be outmoded casemated secondary armament, the forward guns of which often proved useless in any kind of seaway, and like all Japanese warships of the period, these vessels still relied on mixed (i.e. coal and oil) firing for their boilers.
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