Mark XXIII had the same Mk VI exploder as the Mk XIV. Same depth engine, same gyro gear. Difference was purely in the propulsion area, no low speed/long range setting in the XXIII.
They suffer from all other defects endemic to the XIV.
The reason that XXIIIs cost no renown later is probably because the high speed/ short range setting becomes increasingly less attractive as Japanese anti-submarine capabilities get better as the war progresses, necessitating attacks from greater range.
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