2011年7月9日土曜日

港の規模と弾薬の補充の関係

開戦後、兵員を輸送する貨客船めぐる戦闘や駆逐艦やPTボートなどの戦闘はありましたが、巡洋艦クラスが射ちあう海戦は昭和16年12月13日が初めてです。
ボルネオの状況は、12日にMiriを占領し、13日にSingkawangに上陸したところです。また12日には最上級重巡4隻の艦隊がフィリピンから南下してきたxAKやAVPやASやAOをボルネオ島東のマカッサル海峡で多数沈めました。今ここは連合軍の艦船が多数通過中で、13日も貨物船・潜水艦との戦闘がありました。それに加えて連合軍の巡洋艦、駆逐艦との戦闘も起きました。駆逐艦2隻を沈め、CL Trompにも近々沈没と思われる大ダメージを与えましたが、CL Trompの放った21in Mk VIIc Torpedoが一発CA熊野に命中してしまいました。前回のPBEMでも潜水艦の魚雷を食らったことはありますが、水上艦の魚雷を食らったのは初めてのような気がします。CA熊野はSys 21, Flt 47, Eng 3, Fire 0となりました。魚雷を食らってもこの程度で済むものなんですね。近くに日本の根拠地はないので、パラオまでゆっくり航海させる予定です。


もうひとつはナウルで。タラワは9日に、ナウルは12日に占領済みで、Ocean Island上陸用の船団がいまJaluitにいます。タラワを占領した翌日、残ったサプライを陸揚げ中だった船団に連合軍の CA Pensacolaが殴り込んできて、貨物船を一隻失いました。ナウルでもその再現を狙って連合軍の巡洋艦がやってくることが予想されたので、サプライの陸揚げは中止して船団は北に退避させ、天龍、龍田、夕張の軽巡3隻と駆逐艦6隻の部隊で迎え撃つことにしました。案の定、 CA Pensacolaがやってきました。CAに対して、CL中心の艦隊でどうなるのか心配しましたが、2度の交戦の合計でShell hits 50, Torpedo hits 1を与え、撃沈することができました。たしか、条約型重巡は排水量制限の影響で重巡クラスの20センチ砲はおろか、軽巡の砲に対する防御に充分な装甲も備えていなかったような気がするので、9隻対1隻の多勢に無勢状態が効いたのでしょう。でも、こちらもShell hits 2,  on fireとなったCL龍田がSys 43, Flt 29, Eng 22, Fire 2と大きなダメージを受けました。トラックやクエゼリンまで航海させると途中での沈没が怖いので、とりあえずナウルにdisbandして応急修理することとしました。


こうやって水上戦闘が起きると、ダメージを受けた艦は修理を受けることが必要になりますが、無傷で残った艦艇も弾薬の補充を受けなければならず、どこの港で補充することができるのかが気になります。マニュアルに20.1.2.2 SHIP REARMAMENT AT PORTS TABLEには、港の規模ごとにどんな弾薬の補充が可能かが表として載せられています。グランドキャンペーンの開戦時の主要な港の規模とその港に配置されているNaval Supportの数から、具体的に日本領のどの港で補充が可能か表にしてみました。重巡の20cm砲クラス以下の小口径砲はカムラン湾、高雄、パラオなどどこでも補充が可能です。しかし魚雷に関しては南方ではトラック、あとは高雄か馬公でないとだめなようです。空母のSirtiesは主要港ならどこでも補充可能ですが、空母の魚雷はトラックなどの拠点でないとだめですね。なお、港に配備されているNaval HQやBase ForceなどのNaval Supportを含んだ部隊は、開戦時に必ずしも完全充足ではないので、開戦後にNaval Supportの数が増えて、補充が可能になるところもあると思います。
あらためて、AKEの重要性が理解できました。唯一のAKEである樫野は呉で休息中ですが、開戦日にパラオに向かわせるべきだったと反省させられます。また、Lima Cargo級の6隻をAKEに改装中ですが、もっと多くてもいいのかも。


AFTER ACTION REPORTS FOR Dec 13, 41
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Night Time Surface Combat, near Donggala at 69,96, Range 2,000 Yards

Japanese Ships
      CA Mogami
      CA Mikuma
      CA Suzuya
      CA Kumano
      DD Maikaze
      DD Nowaki
      DD Arashi
      DD Hagikaze

Allied Ships
      xAKL Lepus, Shell hits 5, and is sunk



Low visibility due to Thunderstorms  with 28% moonlight
Maximum visibility in Thunderstorms and 28% moonlight: 2,000 yards
Range closes to 9,000 yards...
Range closes to 8,000 yards...
Range closes to 7,000 yards...
Range closes to 6,000 yards...
Range closes to 5,000 yards...
Range closes to 4,000 yards...
Range closes to 3,000 yards...
Range closes to 2,000 yards...
CONTACT: Japanese lookouts spot Allied task force at 2,000 yards
Japanese open fire on surprised Allied ships at 2,000 yards
xAKL Lepus sunk by CA Kumano at 2,000 yards
xAKL Lepus sunk by CA Kumano at 2,000 yards
Combat ends with last Allied ship sunk...
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ASW attack near Donggala  at 68,97

Japanese Ships
      CA Mikuma
      DD Maikaze
      DD Hagikaze
      DD Arashi

Allied Ships
      SS O19, hits 3



SS O19 is sighted by escort
DD Hagikaze attacking submerged sub ....
DD Arashi attacking submerged sub ....
DD Hagikaze fails to find sub and abandons search
DD Arashi attacking submerged sub ....
DD Arashi fails to find sub, continues to search...
DD Arashi fails to find sub, continues to search...
DD Arashi fails to find sub, continues to search...
DD Arashi fails to find sub, continues to search...
Escort abandons search for sub


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Day Time Surface Combat, near Nauru Island at 127,127, Range 19,000 Yards

Japanese Ships
      CL Tenryu
      CL Tatsuta, Shell hits 2,  on fire
      CL Yubari, Shell hits 1
      DD Mutsuki
      DD Kisaragi, Shell hits 1
      DD Yayoi
      DD Mochizuki
      DD Oite
      DD Hayate

Allied Ships
      CA Pensacola, Shell hits 7,  heavy fires



Maximum visibility in Overcast Conditions: 20,000 yards
Range closes to 19,000 yards...
CONTACT: Japanese lookouts spot Allied task force at 19,000 yards
CONTACT: Allied lookouts spot Japanese task force at 19,000 yards
CA Pensacola engages CL Yubari at 19,000 yards
CL Tatsuta engages CA Pensacola at 19,000 yards
CA Pensacola engages DD Mochizuki at 19,000 yards
Range closes to 13,000 yards
CA Pensacola engages CL Yubari at 13,000 yards
CA Pensacola engages DD Oite at 13,000 yards
DD Mutsuki engages CA Pensacola at 13,000 yards
Range closes to 9,000 yards
CA Pensacola engages CL Yubari at 9,000 yards
Range closes to 8,000 yards
CA Pensacola engages CL Tatsuta at 8,000 yards
CA Pensacola engages CL Tenryu at 8,000 yards
CA Pensacola engages DD Mochizuki at 8,000 yards
Range increases to 12,000 yards
CL Yubari engages CA Pensacola at 12,000 yards
CA Pensacola engages DD Oite at 12,000 yards
CA Pensacola engages DD Kisaragi at 12,000 yards
Parker H. orders Allied TF to disengage
Range increases to 15,000 yards
CL Yubari engages CA Pensacola at 15,000 yards
CA Pensacola engages DD Kisaragi at 15,000 yards
Range increases to 16,000 yards
CL Yubari engages CA Pensacola at 16,000 yards
CA Pensacola engages CL Tenryu at 16,000 yards
CA Pensacola engages DD Mochizuki at 16,000 yards
DD Yayoi engages CA Pensacola at 16,000 yards
CA Pensacola engages DD Kisaragi at 16,000 yards
CA Pensacola engages DD Mutsuki at 16,000 yards
Parker H. orders Allied TF to disengage
Range increases to 17,000 yards
CL Tenryu engages CA Pensacola at 17,000 yards
CA Pensacola engages CL Tatsuta at 17,000 yards
CA Pensacola engages DD Oite at 17,000 yards
CA Pensacola engages DD Mutsuki at 17,000 yards
CL Tatsuta engages CA Pensacola at 17,000 yards
CA Pensacola engages DD Oite at 17,000 yards
CA Pensacola engages DD Mochizuki at 17,000 yards
CA Pensacola engages DD Kisaragi at 17,000 yards
Range increases to 18,000 yards
CA Pensacola engages CL Yubari at 18,000 yards
CA Pensacola engages DD Yayoi at 18,000 yards
Range increases to 20,000 yards
CL Yubari engages CA Pensacola at 20,000 yards
CA Pensacola engages DD Kisaragi at 20,000 yards
CL Yubari engages CA Pensacola at 20,000 yards
CA Pensacola engages CL Tatsuta at 20,000 yards
CA Pensacola engages DD Oite at 20,000 yards
Range increases to 21,000 yards
CL Yubari engages CA Pensacola at 21,000 yards
CL Tenryu engages CA Pensacola at 21,000 yards
Range increases to 23,000 yards
Range increases to 24,000 yards
CA Pensacola engages CL Yubari at 24,000 yards
CA Pensacola engages DD Yayoi at 24,000 yards
Range increases to 25,000 yards
Range increases to 26,000 yards
Range closes to 25,000 yards
Range increases to 27,000 yards
Range increases to 28,000 yards
Task forces break off...


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Day Time Surface Combat, near Tandjoengselor at 70,94, Range 5,000 Yards

Japanese Ships
      CA Mogami
      CA Mikuma
      CA Suzuya
      CA Kumano, Shell hits 1
      DD Maikaze, Shell hits 2
      DD Nowaki
      DD Arashi
      DD Hagikaze

Allied Ships
      DD Scout, Shell hits 6,  heavy fires,  heavy damage
      DD Thracian, Shell hits 12, and is sunk



Low visibility due to Thunderstorms
Maximum visibility in Thunderstorms: 6,000 yards
Range closes to 17,000 yards...
Range closes to 11,000 yards...
Range closes to 7,000 yards...
Range closes to 5,000 yards...
CONTACT: Japanese lookouts spot Allied task force at 5,000 yards
CONTACT: Allied lookouts spot Japanese task force at 5,000 yards
CA Suzuya engages DD Thracian at 5,000 yards
DD Maikaze engages DD Thracian at 5,000 yards
Range closes to 4,000 yards
DD Thracian engages DD Maikaze at 4,000 yards
CA Suzuya engages DD Thracian at 4,000 yards
Range increases to 5,000 yards
CA Kumano engages DD Thracian at 5,000 yards
DD Maikaze engages DD Scout at 5,000 yards
CA Mogami engages DD Thracian at 5,000 yards
DD Nowaki engages DD Scout at 5,000 yards
CA Kumano engages DD Thracian at 5,000 yards
CA Suzuya engages DD Thracian at 5,000 yards
DD Scout engages DD Maikaze at 5,000 yards
CA Kumano engages DD Scout at 5,000 yards
DD Thracian sunk by CA Suzuya at 5,000 yards
DD Maikaze engages DD Scout at 5,000 yards
CA Kumano engages DD Scout at 5,000 yards
Range increases to 7,000 yards
DD Scout engages DD Maikaze at 7,000 yards
Range increases to 9,000 yards
DD Maikaze engages DD Scout at 9,000 yards
Range increases to 12,000 yards
DD Maikaze engages DD Scout at 12,000 yards
CA Suzuya engages DD Scout at 12,000 yards
CA Mogami engages DD Scout at 12,000 yards
Collinson, A.C. orders Allied TF to disengage
Range increases to 17,000 yards
DD Nowaki engages DD Scout at 17,000 yards
CA Mikuma engages DD Scout at 17,000 yards
Task forces break off...


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Day Time Surface Combat, near Nauru Island at 128,128, Range 19,000 Yards

Allied aircraft
      no flights

No Allied losses

Japanese Ships
      CL Tenryu
      CL Yubari
      DD Mutsuki
      DD Kisaragi
      DD Yayoi
      DD Mochizuki
      DD Oite
      DD Hayate

Allied Ships
      CA Pensacola, Shell hits 43, Torpedo hits 1, and is sunk



Maximum visibility in Overcast Conditions: 20,000 yards
Range closes to 19,000 yards...
CONTACT: Japanese lookouts spot Allied task force at 19,000 yards
CONTACT: Allied lookouts spot Japanese task force at 19,000 yards
Range closes to 17,000 yards
CL Yubari engages CA Pensacola at 17,000 yards
CA Pensacola engages DD Mutsuki at 17,000 yards
Range closes to 14,000 yards
CA Pensacola engages CL Yubari at 14,000 yards
CA Pensacola engages DD Hayate at 14,000 yards
CA Pensacola engages DD Mochizuki at 14,000 yards
CA Pensacola engages DD Yayoi at 14,000 yards
Range closes to 13,000 yards
CA Pensacola engages CL Yubari at 13,000 yards
CA Pensacola engages DD Kisaragi at 13,000 yards
Range closes to 11,000 yards
CL Yubari engages CA Pensacola at 11,000 yards
CA Pensacola engages CL Tenryu at 11,000 yards
CA Pensacola engages DD Hayate at 11,000 yards
CA Pensacola engages DD Oite at 11,000 yards
Range closes to 9,000 yards
CL Yubari engages CA Pensacola at 9,000 yards
CL Tenryu engages CA Pensacola at 9,000 yards
CA Pensacola engages DD Oite at 9,000 yards
Range increases to 10,000 yards
CL Yubari engages CA Pensacola at 10,000 yards
CA Pensacola engages DD Oite at 10,000 yards
CA Pensacola engages DD Mochizuki at 10,000 yards
Range closes to 9,000 yards
CL Tenryu engages CA Pensacola at 9,000 yards
CA Pensacola engages DD Hayate at 9,000 yards
Range increases to 12,000 yards
CA Pensacola engages CL Yubari at 12,000 yards
CA Pensacola engages DD Oite at 12,000 yards
Range closes to 9,000 yards
CA Pensacola engages CL Tenryu at 9,000 yards
CA Pensacola engages DD Kisaragi at 9,000 yards
Range increases to 11,000 yards
CA Pensacola engages CL Yubari at 11,000 yards
Range closes to 10,000 yards
CA Pensacola engages CL Yubari at 10,000 yards
CA Pensacola engages DD Yayoi at 10,000 yards
Range closes to 7,000 yards
CL Tenryu engages CA Pensacola at 7,000 yards
CA Pensacola engages DD Hayate at 7,000 yards
CL Tenryu engages CA Pensacola at 7,000 yards
CL Tenryu engages CA Pensacola at 7,000 yards
Range increases to 8,000 yards
CA Pensacola engages CL Yubari at 8,000 yards
CL Yubari engages CA Pensacola at 8,000 yards
DD Oite engages CA Pensacola at 8,000 yards
Combat ends with last Allied ship sunk...


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Day Time Surface Combat, near Tandjoengselor at 69,95, Range 6,000 Yards

Japanese Ships
      CA Mogami
      CA Mikuma
      CA Suzuya
      CA Kumano
      DD Maikaze,  on fire
      DD Nowaki
      DD Arashi
      DD Hagikaze

Allied Ships
      DD Scout, Shell hits 7, and is sunk



Low visibility due to Thunderstorms
Maximum visibility in Thunderstorms: 6,000 yards
Range closes to 19,000 yards...
Range closes to 17,000 yards...
Range closes to 15,000 yards...
Range closes to 13,000 yards...
Range closes to 11,000 yards...
Range closes to 10,000 yards...
Range closes to 9,000 yards...
Range closes to 8,000 yards...
Range closes to 7,000 yards...
Range closes to 6,000 yards...
CONTACT: Japanese lookouts spot Allied task force at 6,000 yards
CONTACT: Allied lookouts spot Japanese task force at 6,000 yards
Kurita, Takao crosses the 'T'
Range increases to 7,000 yards
CA Kumano engages DD Scout at 7,000 yards
DD Maikaze engages DD Scout at 7,000 yards
Range increases to 8,000 yards
DD Maikaze engages DD Scout at 8,000 yards
Range increases to 10,000 yards
CA Kumano engages DD Scout at 10,000 yards
Range closes to 6,000 yards
DD Scout sunk by CA Mikuma at 6,000 yards
Combat ends with last Allied ship sunk...


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Day Time Surface Combat, near Donggala at 68,97, Range 1,000 Yards

Japanese Ships
      CA Mogami
      CA Mikuma
      CA Suzuya, Shell hits 3
      CA Kumano, Shell hits 3, Torpedo hits 1
      DD Maikaze,  on fire
      DD Nowaki
      DD Arashi
      DD Hagikaze

Allied Ships
      CL Tromp, Shell hits 7,  on fire



Low visibility due to Thunderstorms
Maximum visibility in Thunderstorms: 1,000 yards
Range closes to 18,000 yards...
Range closes to 12,000 yards...
Range closes to 8,000 yards...
Range closes to 6,000 yards...
Range closes to 4,000 yards...
Range closes to 2,000 yards...
Range closes to 1,000 yards...
CL Tromp engages CA Kumano at 1,000 yards
CA Suzuya engages CL Tromp at 1,000 yards
de Meester, J.B. orders Allied TF to disengage
Range increases to 2,000 yards
CA Kumano engages CL Tromp at 2,000 yards
Task forces break off...


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Day Time Surface Combat, near Donggala at 68,98, Range 7,000 Yards

Japanese Ships
      CA Mogami
      CA Mikuma
      CA Suzuya, Shell hits 1
      CA Kumano
      DD Maikaze,  on fire
      DD Nowaki
      DD Arashi
      DD Hagikaze

Allied Ships
      CL Tromp, Shell hits 5,  heavy fires,  heavy damage



Poor visibility due to Thunderstorms
Maximum visibility in Thunderstorms: 7,000 yards
Range closes to 22,000 yards...
Range closes to 20,000 yards...
Range closes to 18,000 yards...
Range closes to 16,000 yards...
Range closes to 14,000 yards...
Range closes to 12,000 yards...
Range closes to 11,000 yards...
Range closes to 10,000 yards...
Range closes to 9,000 yards...
Range closes to 8,000 yards...
Range closes to 7,000 yards...
CONTACT: Japanese lookouts spot Allied task force at 7,000 yards
CONTACT: Allied lookouts spot Japanese task force at 7,000 yards
CA Kumano engages CL Tromp at 7,000 yards
Range increases to 8,000 yards
CA Kumano engages CL Tromp at 8,000 yards
CA Suzuya engages CL Tromp at 8,000 yards
Range increases to 10,000 yards
CA Suzuya engages CL Tromp at 10,000 yards
CA Kumano engages CL Tromp at 10,000 yards
CL Tromp engages DD Arashi at 10,000 yards
Kurita, Takao orders Japanese TF to disengage
Range increases to 11,000 yards
Range increases to 17,000 yards
CA Suzuya engages CL Tromp at 17,000 yards
CA Mikuma engages CL Tromp at 17,000 yards
Task forces break off...


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