2012年8月14日火曜日

ダーウィンからMerauke空襲

昭和17年9月14日のホーランディア飛行場への大規模な空襲と、その対策としてホーランディアのCAPを手厚くしたことを、昨日のエントリーに書きました。この日のニューギニア中部の航空戦のリプレイを見ながら考えたことは他にもいくつかあります。
  • ホーランディアを維持するためには、南に距離8ヘクスのMeraukeの飛行場(今は規模1)の拡張を妨害することが必要
  • 9月14日にはホーランディア配置の九七重爆でMerauke飛行場を爆撃したが、再度のホーランディア空襲の危険とホーランディアのair supportの不足から、ホーランディアに重爆を配備し続けるのは当面難しい
  • Merauke爆撃は距離13ヘクスのダーウィンから実施することになる
  • 九七重爆は航続距離12ヘクスしかないので、ダーウィンからMeraukeを爆撃できない
  • ダーウィンからMeraukeの爆撃は、ゼロ戦の護衛で一式陸攻が実施する
  • 航続距離が13ヘクスの一式戦(Ki-43-IIa)と百式重爆の飛行隊をビルマからダーウィンに移動させる
  • ホーランディアのCAPを手厚くするので、Merauke爆撃に合わせてsweepを実施することは難しい
これらを念頭において、まずはできることから着手ということで、昭和17年9月15日はダーウィンにいた高雄空の一式陸攻にMerauke爆撃を指示しました。高雄空は定数45機ですが20%はアラフラ海(ダーウィンとMeraukeの間の海)の海上哨戒に指示してあります。また、距離13ヘクスを護衛できる戦闘機はゼロ戦でもA6M2だけなので、護衛はA6M2装備の3rd Ku(たしかRA mod固有の部隊)です。

細かい点までは一致しないにしても、上記のこちらの思考プロセスの大筋を、連合軍側の中の人も辿ることができるだろうと思っていました。だとすれば、連合軍側の対策はMeraukeにCAPを上げることになります。9月14日にはMerauke上空にCAPはいませんでしたが、きっと15日にはCAPが上がっているだろうと予想しました。そこで護衛任務の3rd Kuには全力出撃を指示したのですが、蓋をあけてみると予想通り。今日のMerauke上空には18機のP-40E WarhawkがCAPしていました。お互いのこういったヨミあいと、そのヨミが的中したりはずれたりするあたりが、PBEMの面白さの秘密その一なんだとつくづく感じます。開発者がAIに工夫をこらしても、こういう点ではまだまだまだ。いちどPBEMに手を染めてしまうと、そのゲームでAIと対戦するのがばからしくなってしまうのもこのあたりが原因ですよね。

Merauke上空に到着したのは36機のゼロ戦(A6M2)の護衛と29機の一式陸攻でした。護衛戦闘機とCAPの戦闘ではCAPが有利というのが定評ですが、今日の対決は護衛戦闘機の方が数が多かったこともあって、ゼロ戦の損失7機(A2Aで5機、Ops loss 2機)に対して、P-40E Warhawkの損失12機(A2Aで9機、Ops loss 3機)と有利に戦闘を終えることができました。一式陸攻はFlakとOps lossで各1機損失となりましたが、A2A損失はゼロでした。戦果はAirbase hits 1とRunway hits 6で、もう少したくさん命中させてほしかったなという感じでした。

リプレイが終わってマップをみてみると、Meraukeには飛行機のアイコンがついていません。連合軍側はMerauke飛行場に戦闘機を配備するのは危険とみて、Horn IslandからLRCAPさせたのだろうと想像します。距離4ヘクスのLRCAPとはいえ、航続距離の短い連合軍戦闘機にとっては楽な仕事ではなかったでしょう。距離13ヘクス(ラバウルからガダルカナル島ルンガまでが14ヘクス)も飛んだ護衛のゼロ戦がうまく戦えたのは、LRCAP相手だったからということもあったでしょう。

今日の戦闘で7機失った3rd Kuゼロ戦隊のパイロットの死傷者はKIA 1名、WIA 1名、MIA 1名で、Morale 99、Fatigue 12。2機失った高雄空陸攻隊のパイロットの死傷者はKIA 2名で、Morale 99、Fatigue 10。電子のパイロットたちも今日の空戦を勝利と認識しているようで、moraleは高いままです。連合軍側はポートモレスビーから新手の戦闘機をMeraukeに送り込んでCAPさせるか、Horn Islandに送り込んでLRCAPさせるか。Meraukeは爆撃を受けるし、Horn IslandからのLRCAPは疲労がたまるし、難しい選択です。日本側もかなり疲れてはいますが、もう一日続けてMerauke爆撃に出撃してもらおうと思います。連合軍はまたMeraukeにAPDのコンボイを送り込んできていますし。
AFTER ACTION REPORTS FOR Sep 15, 42
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ASW attack near Perth  at 41,147

Japanese Ships
      SS I-30

Allied Ships
      AM Lithgow



SS I-30 is located by AM Lithgow
I-30 diving deep ....
AM Lithgow fails to find sub, continues to search...
AM Lithgow fails to find sub, continues to search...
AM Lithgow fails to find sub, continues to search...
AM Lithgow fails to find sub, continues to search...
AM Lithgow fails to find sub, continues to search...
Escort abandons search for sub


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ASW attack near Tioman Island  at 51,83

Japanese Ships
      DD Shiranui

Allied Ships
      SS O24, hits 5



SS O24 is sighted by escort
O24 bottoming out ....
DD Shiranui fails to find sub, continues to search...
DD Shiranui fails to find sub, continues to search...
DD Shiranui fails to find sub, continues to search...
DD Shiranui fails to find sub, continues to search...
DD Shiranui attacking submerged sub ....
Escort abandons search for sub


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ASW attack near Izu Oshima  at 113,63

Japanese Ships
      DD Ariake

Allied Ships
      SS Growler



SS Growler is located by DD Ariake
Growler diving deep ....
DD Ariake fails to find sub, continues to search...
DD Ariake fails to find sub, continues to search...
DD Ariake attacking submerged sub ....
DD Ariake fails to find sub, continues to search...
DD Ariake attacking submerged sub ....
Escort abandons search for sub


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ASW attack near Singapore  at 51,84

Japanese Ships
      AO Sata
      TK Kuroshio Maru
      TK Huzisan Maru

Allied Ships
      SS Skipjack



SS Skipjack is sighted by escort
Skipjack bottoming out ....
Sub escapes detection


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ASW attack near San Francisco  at 215,75

Japanese Ships
      SS I-1, hits 2

Allied Ships
      AM Rail
      xAP Titan
      xAP Cape Fairweather
      DD Dale



SS I-1 is sighted by escort
DD Dale attacking submerged sub ....
DD Dale fails to find sub, continues to search...
DD Dale fails to find sub, continues to search...
DD Dale attacking submerged sub ....
DD Dale fails to find sub, continues to search...
Escort abandons search for sub


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ASW attack near San Francisco  at 215,75

Japanese Ships
      SS I-1

Allied Ships
      AM Rail
      xAP Titan
      xAP Cape Fairweather
      DD Dale



SS I-1 is sighted by escort
DD Dale fails to find sub, continues to search...
DD Dale fails to find sub, continues to search...
DD Dale fails to find sub, continues to search...
Escort abandons search for sub


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Sub attack near Fraser Island  at 98,156

Japanese Ships
      SS I-170, hits 4

Allied Ships
      AM Tamworth, Torpedo hits 1,  heavy damage
      AM Bowen



SS I-170 launches 2 torpedoes at AM Tamworth
AM Bowen fails to find sub, continues to search...
AM Bowen attacking submerged sub ....
AM Bowen loses contact with SS I-170
AM Bowen attacking submerged sub ....
AM Bowen fails to find sub, continues to search...
AM Bowen attacking submerged sub ....
Escort abandons search for sub


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Sub attack near Kavieng  at 108,118

Japanese Ships
      PB Choun Maru #18
      xAKL Shoan Maru
      xAKL Hukko Maru

Allied Ships
      SS KXIV



SS KXIV launches 2 torpedoes at PB Choun Maru #18
KXIV diving deep ....
PB Choun Maru #18 fails to find sub, continues to search...
PB Choun Maru #18 fails to find sub, continues to search...
PB Choun Maru #18 fails to find sub, continues to search...
PB Choun Maru #18 fails to find sub, continues to search...
PB Choun Maru #18 fails to find sub, continues to search...
Escort abandons search for sub


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Morning Air attack on Chittagong , at 55,41 

Weather in hex: Partial cloud

Raid detected at 47 NM, estimated altitude 31,000 feet.
Estimated time to target is 13 minutes

Japanese aircraft
      Ki-44-IIa Tojo x 26



No Japanese losses



Aircraft Attacking:
      26 x Ki-44-IIa Tojo sweeping at 25000 feet * 



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Morning Air attack on Merauke , at 89,124 

Weather in hex: Heavy rain

Raid detected at 35 NM, estimated altitude 12,000 feet.
Estimated time to target is 12 minutes

Japanese aircraft
      A6M2 Zero x 36
      G4M1 Betty x 29



Allied aircraft
      P-40E Warhawk x 18


Japanese aircraft losses
      A6M2 Zero: 1 destroyed
      G4M1 Betty: 4 damaged

Allied aircraft losses
      P-40E Warhawk: 5 destroyed



Airbase hits 1
Runway hits 6

Aircraft Attacking:
      29 x G4M1 Betty bombing from 9000 feet
               Airfield Attack:  2 x 250 kg GP Bomb,  4 x 60 kg GP Bomb
      13 x A6M2 Zero sweeping at 9000 feet * 

CAP engaged:
343rd FG/18th FS with P-40E Warhawk (9 airborne, 0 on standby, 0 scrambling)
      9 plane(s) intercepting now.
      Group patrol altitude is 25000 
      Raid is overhead
58th FG/68th FS with P-40E Warhawk (9 airborne, 0 on standby, 0 scrambling)
      9 plane(s) intercepting now.
      Group patrol altitude is 25000 
      Raid is overhead



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Morning Air attack on 1st Chinese Corps, at 85,45 (Nanyang)

Weather in hex: Heavy rain

Raid spotted at 39 NM, estimated altitude 10,000 feet.
Estimated time to target is 12 minutes

Japanese aircraft
      Ki-21-IIa Sally x 64
      Ki-43-Ic Oscar x 37
      Ki-49-IIa Helen x 51



Japanese aircraft losses
      Ki-21-IIa Sally: 3 damaged
      Ki-49-IIa Helen: 2 damaged


Allied ground losses:
      694 casualties reported
         Squads: 2 destroyed, 53 disabled
         Non Combat: 1 destroyed, 55 disabled
         Engineers: 0 destroyed, 0 disabled
      Guns lost 6 (1 destroyed, 5 disabled)


Aircraft Attacking:
      17 x Ki-49-IIa Helen bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb
      17 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb
      17 x Ki-49-IIa Helen bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb
      17 x Ki-49-IIa Helen bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb
      24 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb
      20 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb
       3 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb

Also attacking 36th Chinese Corps ...
Also attacking 92nd Chinese Corps ...
Also attacking 82nd Chinese Corps ...
Also attacking 16th Chinese Corps ...
Also attacking 91st Chinese Corps ...
Also attacking 30th Chinese Corps ...
Also attacking 57th Chinese Corps ...
Also attacking 19th Chinese Corps ...
Also attacking 76th Chinese Corps ...
Also attacking 41st Chinese Corps ...
Also attacking 1st Chinese Corps ...
Also attacking 36th Chinese Corps ...
Also attacking 82nd Chinese Corps ...
Also attacking 16th Chinese Corps ...
Also attacking 91st Chinese Corps ...
Also attacking 16th Chinese Corps ...
Also attacking 91st Chinese Corps ...
Also attacking 1st Chinese Corps ...
Also attacking 36th Chinese Corps ...
Also attacking 82nd Chinese Corps ...
Also attacking 91st Chinese Corps ...
Also attacking 76th Chinese Corps ...
Also attacking 1st Chinese Corps ...
Also attacking 36th Chinese Corps ...
Also attacking 82nd Chinese Corps ...
Also attacking 16th Chinese Corps ...
Also attacking 91st Chinese Corps ...


--------------------------------------------------------------------------------
Morning Air attack on Liuchow , at 74,55 

Weather in hex: Moderate rain

Raid spotted at 38 NM, estimated altitude 11,000 feet.
Estimated time to target is 11 minutes

Japanese aircraft
      Ki-21-IIa Sally x 34
      Ki-43-Ic Oscar x 8
      Ki-49-IIa Helen x 17



Japanese aircraft losses
      Ki-21-IIa Sally: 1 damaged


Allied ground losses:
      152 casualties reported
         Squads: 1 destroyed, 15 disabled
         Non Combat: 1 destroyed, 4 disabled
         Engineers: 0 destroyed, 1 disabled
      Guns lost 2 (1 destroyed, 1 disabled)


Airbase hits 4
Airbase supply hits 3
Runway hits 18

Aircraft Attacking:
      17 x Ki-49-IIa Helen bombing from 6000 feet
               Airfield Attack:  4 x 250 kg GP Bomb
      19 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb
      15 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb

Also attacking 79th Chinese Corps ...
Also attacking 11th Chinese Corps ...
Also attacking Liuchow  ...
Also attacking 27th Chinese Corps ...
Also attacking 7th Chinese Corps ...
Also attacking Liuchow  ...
Also attacking 46th Chinese Corps ...
Also attacking 14th Chinese Corps ...
Also attacking Liuchow  ...
Also attacking 65th Chinese Corps ...
Also attacking 13th Chinese Corps ...
Also attacking Liuchow  ...
Also attacking 3rd Prov Chinese Corps ...
Also attacking Liuchow  ...
Also attacking 95th Chinese Corps ...
Also attacking 98th Chinese Corps ...


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Morning Air attack on Chittagong , at 55,41 

Weather in hex: Partial cloud

Raid detected at 81 NM, estimated altitude 13,000 feet.
Estimated time to target is 25 minutes

Japanese aircraft
      Ki-43-Ic Oscar x 24
      Ki-43-IIa Oscar x 8
      Ki-49-IIa Helen x 95



Japanese aircraft losses
      Ki-49-IIa Helen: 32 damaged
      Ki-49-IIa Helen: 1 destroyed by flak

Allied Ships
      AMc Patna, Bomb hits 1,  heavy fires,  heavy damage


Allied ground losses:
      7 casualties reported
         Squads: 0 destroyed, 0 disabled
         Non Combat: 0 destroyed, 1 disabled
         Engineers: 0 destroyed, 0 disabled


Airbase hits 6
Airbase supply hits 1
Runway hits 50
Port hits 1

Aircraft Attacking:
      19 x Ki-49-IIa Helen bombing from 11000 feet
               Airfield Attack:  4 x 250 kg GP Bomb
      17 x Ki-49-IIa Helen bombing from 11000 feet
               Port Attack:  4 x 250 kg GP Bomb
      13 x Ki-49-IIa Helen bombing from 11000 feet
               Airfield Attack:  4 x 250 kg GP Bomb
      18 x Ki-49-IIa Helen bombing from 11000 feet
               Airfield Attack:  4 x 250 kg GP Bomb
      22 x Ki-49-IIa Helen bombing from 11000 feet
               Airfield Attack:  4 x 250 kg GP Bomb
       5 x Ki-49-IIa Helen bombing from 11000 feet
               Airfield Attack:  4 x 250 kg GP Bomb



--------------------------------------------------------------------------------
Morning Air attack on 31st Group Army, at 89,47 , near Kweiteh

Weather in hex: Thunderstorms

Raid spotted at 13 NM, estimated altitude 8,000 feet.
Estimated time to target is 3 minutes

Japanese aircraft
      Ki-30 Ann x 10



No Japanese losses


Allied ground losses:
      21 casualties reported
         Squads: 0 destroyed, 0 disabled
         Non Combat: 0 destroyed, 3 disabled
         Engineers: 0 destroyed, 0 disabled


Aircraft Attacking:
      10 x Ki-30 Ann bombing from 6000 feet
               Ground Attack:  1 x 250 kg GP Bomb



--------------------------------------------------------------------------------
Morning Air attack on Akyab , at 54,45 

Weather in hex: Heavy cloud

Raid spotted at 20 NM, estimated altitude 12,000 feet.
Estimated time to target is 6 minutes

Japanese aircraft
      A6M3b Zero x 14
      Ki-49-IIa Helen x 27



No Japanese losses



Runway hits 3

Aircraft Attacking:
      27 x Ki-49-IIa Helen bombing from 9000 feet
               Airfield Attack:  4 x 250 kg GP Bomb



--------------------------------------------------------------------------------
Morning Air attack on Chittagong , at 55,41 

Weather in hex: Partial cloud

Raid detected at 62 NM, estimated altitude 16,000 feet.
Estimated time to target is 19 minutes

Japanese aircraft
      Ki-49-IIa Helen x 11



Japanese aircraft losses
      Ki-49-IIa Helen: 8 damaged



Airbase hits 1
Runway hits 2

Aircraft Attacking:
      11 x Ki-49-IIa Helen bombing from 11000 feet
               Airfield Attack:  4 x 250 kg GP Bomb



--------------------------------------------------------------------------------
Morning Air attack on 91st Chinese Corps, at 85,45 (Nanyang)

Weather in hex: Heavy rain

Raid spotted at 26 NM, estimated altitude 8,000 feet.
Estimated time to target is 7 minutes

Japanese aircraft
      Ki-21-IIa Sally x 6



No Japanese losses


Allied ground losses:
      8 casualties reported
         Squads: 0 destroyed, 1 disabled
         Non Combat: 0 destroyed, 0 disabled
         Engineers: 0 destroyed, 0 disabled


Aircraft Attacking:
       6 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb



--------------------------------------------------------------------------------
ASW attack near Izu Oshima  at 113,63

Japanese Ships
      DD Shiratsuyu
      DD Suzukaze

Allied Ships
      SS Growler



SS Growler is located by DD Shiratsuyu
Growler diving deep ....
DD Suzukaze fails to find sub, continues to search...
DD Suzukaze fails to find sub, continues to search...
DD Suzukaze attacking submerged sub ....
DD Suzukaze attacking submerged sub ....
DD Suzukaze fails to find sub, continues to search...
Escort abandons search for sub


--------------------------------------------------------------------------------

Ground combat at 89,47 (near Kweiteh)

Japanese Deliberate attack

Attacking force 630 troops, 0 guns, 94 vehicles, Assault Value = 53

Defending force 54 troops, 0 guns, 0 vehicles, Assault Value = 1

Japanese adjusted assault: 29 

Allied adjusted defense: 1 

Japanese assault odds: 29 to 1 

Combat modifiers
Defender: 
Attacker: leaders(+), leaders(-)


Allied ground losses:
      65 casualties reported
         Squads: 0 destroyed, 0 disabled
         Non Combat: 7 destroyed, 0 disabled
         Engineers: 0 destroyed, 0 disabled
      Units destroyed 1


Assaulting units:
    17th Tank Regiment

Defending units:
    31st Group Army


--------------------------------------------------------------------------------

Ground combat at Nanyang (85,45)

Japanese Bombardment attack

Attacking force 61940 troops, 605 guns, 246 vehicles, Assault Value = 2180

Defending force 180531 troops, 755 guns, 0 vehicles, Assault Value = 5400


Allied ground losses:
      116 casualties reported
         Squads: 3 destroyed, 8 disabled
         Non Combat: 0 destroyed, 0 disabled
         Engineers: 0 destroyed, 0 disabled


Assaulting units:
    110th Division
    70th Division
    35th Division
    36th Division
    32nd Division
    6th Medium Field Artillery Regiment
    Botanko Hvy Gun Regiment
    2nd Ind.Hvy.Art. Battalion
    3rd Ind.Hvy.Art. Battalion
    12th Army
    20th Ind. Mtn Gun Battalion
    10th Ind. Mountain Gun Regiment
    11th Field Artillery Regiment

Defending units:
    91st Chinese Corps
    77th Chinese Corps
    36th Chinese Corps
    90th Chinese Corps
    57th Chinese Corps
    61st Chinese Corps
    55th Chinese Corps
    16th Chinese Corps
    33rd Chinese Corps
    19th Chinese Corps
    23rd Chinese Corps
    17th Chinese Corps
    3rd Chinese Corps
    1st Chinese Corps
    34th Chinese Corps
    47th Chinese Corps
    41st Chinese Corps
    30th Chinese Corps
    76th Chinese Corps
    92nd Chinese Corps
    82nd Chinese Corps
    4th Chinese Cavalry Corps
    2nd War Area 
    5th War Area 
    Red Chinese Army
    4th Group Army
    8th Group Army
    34th Group Army
    2nd Group Army
    7th Group Army
    22nd Group Army
    6th Group Army
    19th Chinese Base Force




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