''The "Kayaba Ka-1 observation auto-gyro" was developed and used by the military.''<br> ''This rotor aircraft was used for anti-submarine patrol similar to modern ship-borne helicopters.''<br> ''This aircraft can launch from landing crafts and light carriers with full-length decks as well as from aviation cruisers and battleships with flight decks.''
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''The "Kayaba Ka-1 observation auto-gyro" was developed and used by the military.''<br>
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''This rotor aircraft was used for anti-submarine patrol similar to modern ship-borne helicopters.''<br>
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''This aircraft can launch from landing crafts and light carriers with full-length decks as well as from aviation cruisers and battleships with flight decks.''
==Notes==
==Notes==
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*'''Unbuildable.''' Stock equipment of [[Akitsu Maru|Akitsu Maru Kai]]. Ranking reward for December 2013.
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;Unbuildable.
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:Stock equipment of [[Akitsu Maru|Akitsu Maru Kai]].