|
〔Nelson. ''Japanese-English Character Dictionary''. page 773〕 was the third of six s, built for the Imperial Japanese Navy under the Circle One Program (''Maru Ichi Keikaku''). Three were laid down in JFY 1931 and the next three in JFY 1933. The remaining six ships in the plan were built as the .〔Lengerer, pp. 92-3〕 ==History== Construction of the advanced ''Hatsuharu''-class destroyers was intended to give the Imperial Japanese Navy smaller and more economical destroyers than the previous and destroyers, but with essentially the same weaponry.〔GlobalSecurity.org: (IJN ''Hatsuharu'' class )〕 These conflicting goals proved beyond contemporary destroyer design, and the resulting ships were top-heavy design, with severe stability problems and with inherent structural weaknesses. After the "''Tomozuru'' Incident" of 1934 and "IJN 4th Fleet Incident" in 1935, ''Wakaba'' underwent extensive modifications on completion to remedy these issues. The ''Hatsuharu''-class destroyers used the same 50 caliber 12.7 cm gun as the ''Fubuki'' class, but all turrets could elevate to 75° to give the main guns a minimal ability to engage aircraft. During the war the single turret was removed on all surviving ships after 1942. The only anti-aircraft guns were two water-cooled, license-built Vickers . These guns were deemed to be too heavy, slow-firing and short-ranged and were replaced by license-built French Hotchkiss anti-aircraft guns in single, double and triple mounts from 1943 for the surviving ships. These powered mounts were still unsatisfactory because their traverse and elevation speeds were too slow to engage high-speed aircraft〔(【引用サイトリンク】title=Japan 25 mm/60 (1") Type 96 Model 1 )〕 and more single mounts were fitted to ships in the last year of the war. The 61 cm Type 90 torpedo was mounted in triple tube ''Type 90 Model 2'' launchers It was traversed by an electro-hydraulic system and could traverse 360° in twenty-five seconds. If the backup manual system was used the time required increased to two minutes. Each tube could be reloaded in twenty-three seconds using the endless wire and winch provided.〔Lengerer, pp. 102-3〕 ''Wakaba'' was laid down on December 12, 1931, launched on March 18, 1934 and commissioned on October 31, 1934. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Japanese destroyer Wakaba (1934)」の詳細全文を読む スポンサード リンク
|