By far the largest destroyers built in series by the
Japanese, the 'Akitzuki' class ships were conceived originally as AA escorts
comparable with the British 'Dido' and US Atlanta' cruiser classes and, by
comparison, offered a cheaper solution to the problem. The choice of a 100-mm
(3.94-in) gun was probably better than that of the 133.4- mm (5.25-in) and
127-mm (5-in) weapons of the Western ships, whose rate of fire was considerably
lower, though the lively hull of a destroyer must have made them less effective
than cruisers when firing at aircraft. They were the only eight-gun destroyers
in the Japanese fleet, and it would seem that the quadruple torpedo tube mounting
was something of a late addition. Though they had the basis of an effective
design, the Japanese too had underestimated the devastating effect of a
determined air attack and only four light automatic guns of the standard 25-mm
calibre were originally shipped. War experience encouraged the addition of more
at virtually any opportunity, so that, by the end of the war, those still
afloat (six were sunk) could dispose of up to 50 such weapons, Launched between
1941 and 1944, the ships of the class were the Akitsuki, Fuyutsuki, Hanatsuki,
Harutsuki, Hatsutsuki, Natsusuki, Niitsuki, Shimotsuki, Suzutsuki, Terutsuki,
Wakatsuki and Yoitsuki.
The most distinctive feature of the class was the complex
casing of the single stack; extensive trunking enabled the funnel to be sited
far enough abaft the bridge both to cut the smoke problem and greatly improve
visibility, while placing it sufficiently far forward to permit extra AA
platforms to be installed where the after stack would normally have been. To
increase its effectiveness, the new design was given a second fire- control
position aft. A feature of preceding classes had been their extremely light
masts, but the 'Akitzukis' were among the first to have their masts
strengthened for the support of the considerable bulk of the Type 22
surveillance radar antenna. The size of the hull, combined with a comparatively
light gun armament and few torpedoes, allowed more generous top weight margins
than was customary with Japanese destroyers, one result being a large depth-charge
capacity. Nearly 40 more hulls to two improved designs were planned but never
completed.
The lead ship, Akitzuki, was started in July 1940 and
completed m June 1942, but the last of the class was not completed until April
1945 (Hatsutsuki). The Hatsuki, Kiyotsuki and Ootsuki were never laid down and
the Michitsuki was stopped in March 1945 and broken up to make way for suicide
craft. Six were sunk in action or torpedoed, and the other six were
surrendered, two of them badly damaged. The Fuyutsuki was taken over by the US
Navy in 1947 and scrapped, the Harutsuki became the Soviet Pospechny, the
Hatsutsuki went to Britain and the Yoitsuki became the Chinese Fen Yang.
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