Ships in class: Akatsuki, Hibiki, Ikazuchi, Inazuma
The Akatsuki vessels had larger boilers and a narrower fore funnel than the previous Fubukis, and internally the number of boilers was reduced from four to three due to improvements in boiler design and efficiency. Other improvements over the Fubuki class included a splinter-proof torpedo launcher-turret, which allowed the torpedo launcher tubes to be reloaded in action.
The main battery consisted of six Type 3 127 mm 50 caliber naval guns, mounted in pairs in three weather-proof, splinter-proof, gas-tight gun turrets . Ammunition was brought up on hoists from magazines located directly underneath each gun turret, which had a greater rate of fire than other contemporary destroyers, where ammunition was typically manually loaded.