Chapter 8 Aftermath of Pearl Harbor (part 2) The Japanese Fleet
Counting the cost – the Japanese Naval Air groups
As night falls, Yamamoto is aboard the cruiser Tone digesting the fact that the First Air Fleet has lost its commander, chief of staff and primary planner as Admirals Nagumo and Kusaka are dead and Captain Genda is badly wounded and out of action. thus Rear Admiral Yamaguchi now is the senior remaining carrier leader. Yamaguchi is ordered to prepare a report of available aircraft and losses suffered for the day, which he is rapidly able to do, having spent the day watching the survivors return from the raid throughout the morning and early afternoon. His report is sobering, although the amount of damage inflicted offsets that to a great degree.
The first wave, with 40 torpedo bombers and 3 dive bombers suffered horrific losses. In all 33 aircraft (and their pilots) were killed, and another 6 wrecked. However this wave sank a battleship, a submarine (which raises an eyebrow), a target ship (another rueful shake of the head), the destruction of a destroyer, heavy damage (and probable sinking) of a tanker, damage to 3 battleships, and damage to a repair ship. At nearly 80% casualties the First Wave achieved the mission minimum goal of the mission of knocking 4 American battleships out of action.
The report of the Second wave is just as painful however. This wave was supposed to suppress 2 American airfields and the 42 level bombers assigned the job lost 22 bombers shot down and 8 more write offs, and one target completely escaped attack while the American fighter strength available to meet the Third Wave did not seem terribly affected by the attack on Wheeler. Another 12 fighters shot down and 6 write offs just to get the force through is a lot more acceptable, particularly in light of kills being claimed but in effect both strikes were a waste of resources and lives. The level bombers however did definitely destroy a battleship and crippled at least two more, so that element of the strike at least was a success and worth the cost of the 6 level bombers shot down and 6 write offs. It is too early to tell if the attack on the Fleet headquarters was a success, although the surviving 4 pilots (of the 6 who carried out the strike) indicated good hits on the building. Yamaguchi is skeptical if it was worth the cost of 2 shot down and 2 write offs. In all out of 98 bombers and 60 fighters, he lost 42 aircrews (28%) and 66 aircraft lost or wrecked (44%). Unsustainable losses by any measure but this wave enabled the mission in two waves to achieve the neutralization of 5 of the 9 American battleships that were present at the beginning of the strike.
For Yamaguchi the most sobering part of the losses of the first two waves is that airborne strike commander (Fuchida), an old friend and classmate, as well as 4 of the 6 Lieutenant Commanders leading it are dead, including another of the planners, Lieutenant Commander Murata. His torpedo bombers are now being led by Lieutenants instead of Lieutenant Commanders and other officer casualties were equally severe. His fighters too lost some valuable leaders, although thankfully not as many and at a lower percentage (only 2 lost).
The Third Wave was supported to neutralize the American bomber base, which the damage to the Shokaku and Akagi makes clear was a failure. However, reports indicate 2 more battleships were damaged, as were 4 cruisers, and perhaps those cruisers even lost one or more sunk. Another 39 bombers lost, 41 more written off, which is a painful loss indeed especially as again losses of squadron leaders has been severe. The 17 fighters lost and 6 more written off were equally serious losses and only the damage inflicted (six heavy ships knocked out or possibly sunk) makes the loss acceptable at all. In all 103 aircraft lost or wrecked out of 180 aircraft committed and 31% aircrew lost and almost 60% of the aircraft expended. A terribly stiff price for neutralizing 2 more battleships and 4 cruisers. Yamaguchi is convinced this wave was a terrible mistake.
In all, the attack has cost the First Air Fleet lost 131 aircraft and their aircrew lost en route to, over or returning from their targets. Another 71 aircraft are so badly damaged as to be write offs. Then a carrier was sunk and two more suffered damage, one of which is effectively out of the battle. Along with the valuable aircraft aboard the Soryu, the loss of the ship and many of its very experienced crew is a hard blow. Another 10 valuable pilots died with the ship, along with the other 400 men who died with her and none of the aircrew that were rescued are really fit for duty after their dunking in the cold North Pacific. The hit on the Shokaku gutted part of the hanger deck and and also accounted for a few aircraft on deck. Luckily that hit did not kill or injure any of the valuable pilots. The good news was that the damage to the Akagi did not include any aircraft or aircrew, although Genda being out of the fight is a serious problem. Overall the first day has cost the fleet 2 carriers sunk or knocked out of action (33%), 262 aircraft shot down or wrecked (63%) and 141 valuable pilots (34%) including most of the his best leaders. To knock 7 battleships out of action along with some cruisers and destroyers. A victory, but one that cannot be repeated with that loss rate. Luckily there are spares aboard the surviving undamaged carriers, enough so that the damaged aircraft that are not write offs can be repaired and another 30 aircraft (10 of each type) are added to his strength. In his report he suggests that in the future the dive bombers lead off any attack to weaken enemy defenses before the more vulnerable torpedo aircraft go in.
In the morning it will be time to shuffle aircraft around and send a courier to the Tone with the report.
Preparing for the next battle
December 7 Night – December 8 Evening
Japanese Forces
Japanese striking Force
1030 hours 180 miles NNW Oahu (150 NM due north Kaui) (final recovery position)
speed 24 knots for 12 hours (2230 hours) 120 NM west
course change N 27 knots (2230 hours – 0830 hours) puts them 500 miles north of Nihoa Island, meets with supply group 2. Destroyers refuel 0900 – 1700 hours
Position is 700 miles from Oahu and 800 miles from Midway Island, just out of air search range for both. After refueling, the Zuikaku, 3 destroyers, 5 fleet oilers (from supply group 1) all head for Japan at 12 knots (reaching Japan on December 21). Remainder of the Striking Force steams toward Midway beginning 1700 hours December 8 at 21 knots, which will put them strike range of Midway Island on the afternoon of December 9, and the bombardment force can reach the island after dark.
Midway Invasion Force and Supply Group 3 is 600 miles west of Midway Island heading due east heading directly for Midway as of dusk on December 8. This fleet accelerates to its best speed of 15 knots just after dark, which will place them off Midway the morning of December 10.
The Japanese also have extensive air search out, with 24 Kate's flying in pairs out in a search pattern extending 180 degrees from the fleets course and extending out 200 miles, but sea conditions initially preclude using the float planes after they are recovered on December 7. It is not until the fleet refuels in the middle part of the day on December 8 that the float planes are again launched, and it is also the first chance that Yamaguchi has to send his report to Yamamoto. Aircraft, pilots and flight leaders are regrouped so that the Hiryu, Kaga, Shokaku, Akagi each have relatively balanced air groups, while the Zuikaku is sent toward home with minimal aircraft and aircrew as well as most of the survivors of the Soryu.
By December 9 the Japanese are deployed as follows:
Kido Butai (First Air Fleet) (Striking Force)
Carriers Akagi, Kaga, Soryu, Hiryu, Shokaku, Zuikaku, battleships Hiei Haruna, Kongo, Kirishima, CA Tone (fleet flag: Yamamoto), , Chikuma, CL Abukuma, 14 destroyers, 12 fleet oilers,
detached
Refueling Group 1 – 3 oilers, 1 destroyer (en route to Japan after refueling fleet on December 6)
Refueling Group 2 – 5 oilers, 3 destroyers, CV Zuikaku (en route to Japan after refueling December 8)
Refueling Group 3 – 2 oilers, 1 destroyer (with Midway Invasion Force)
Refueling Group 4 – 2 oilers, 2 destroyers (off Marcus Island)
Midway Island Assault Force
CA Aoba, Furutaka, Kako, Kinugasa, 4 destroyers, 2 gunboats, 6 submarine chasers, 1 seaplane tender, 2 tenders, 9 transports, South Sea Force (4,886 troops)
losses:
CVL Soryu sunk, knocked out of action CV Zuikaku, damaged: CV Akagi
aircraft losses: 262 aircraft, 141 pilots all causes
The Japanese strike force left Japan with 459 aircraft (including spares). With only four available flight decks and serious losses among all squadrons, Admiral Yamaguchi orders a reorganization while the fleet is refueling on December 8. The Fleet has 187 fighter and strike aircraft remaining as of December 8 consisting of 91 fighters, 40 dive bombers, and 56 torpedo bombers after spare aircraft are assembled and including those lost aboard the Soryu and Zuikaku. . The Zuikaku is sent home with 11 fighters and 8 torpedo bombers to provide basic defense of its task group, while the remaining aircraft are divided among the 4 remaining carriers, giving each 20 fighters, 12 torpedo bombers and 10 dive bombers. Also available are 12 Jake float planes aboard the Tone and Chikuma, while the battleships each carry 2 Pete float planes. However heavy seas and the high speed of the Japanese movements prevent the use of any of the float planes after noon on the 7th, as the Fleet cannot afford the time needed to recover them if launched. Luckily the weather improved some on December 8, and it is hoped the weather will cooperate the next two days.
In the view of the fleet staff this is an alarmingly low number of strike and fighter aircraft to face potentially 2 American carriers and possibly two others if all of the American carriers are in the area, which between them would have according to estimates 92 fighters and 172 strike aircraft. But the entire expedition is a gamble, and Yamamoto believes firmly that now is the time to hit the Americans again while they are still trying to shake off peacetime lethargy and inexperience. At worst the Americans have a slight edge in aircraft and potentially the Japanese can catch and sink the more likely grouping of 2 American carriers as Yamamoto believes that at least one is on the West Coast and probably two.
As night falls, Yamamoto is aboard the cruiser Tone digesting the fact that the First Air Fleet has lost its commander, chief of staff and primary planner as Admirals Nagumo and Kusaka are dead and Captain Genda is badly wounded and out of action. thus Rear Admiral Yamaguchi now is the senior remaining carrier leader. Yamaguchi is ordered to prepare a report of available aircraft and losses suffered for the day, which he is rapidly able to do, having spent the day watching the survivors return from the raid throughout the morning and early afternoon. His report is sobering, although the amount of damage inflicted offsets that to a great degree.
The first wave, with 40 torpedo bombers and 3 dive bombers suffered horrific losses. In all 33 aircraft (and their pilots) were killed, and another 6 wrecked. However this wave sank a battleship, a submarine (which raises an eyebrow), a target ship (another rueful shake of the head), the destruction of a destroyer, heavy damage (and probable sinking) of a tanker, damage to 3 battleships, and damage to a repair ship. At nearly 80% casualties the First Wave achieved the mission minimum goal of the mission of knocking 4 American battleships out of action.
The report of the Second wave is just as painful however. This wave was supposed to suppress 2 American airfields and the 42 level bombers assigned the job lost 22 bombers shot down and 8 more write offs, and one target completely escaped attack while the American fighter strength available to meet the Third Wave did not seem terribly affected by the attack on Wheeler. Another 12 fighters shot down and 6 write offs just to get the force through is a lot more acceptable, particularly in light of kills being claimed but in effect both strikes were a waste of resources and lives. The level bombers however did definitely destroy a battleship and crippled at least two more, so that element of the strike at least was a success and worth the cost of the 6 level bombers shot down and 6 write offs. It is too early to tell if the attack on the Fleet headquarters was a success, although the surviving 4 pilots (of the 6 who carried out the strike) indicated good hits on the building. Yamaguchi is skeptical if it was worth the cost of 2 shot down and 2 write offs. In all out of 98 bombers and 60 fighters, he lost 42 aircrews (28%) and 66 aircraft lost or wrecked (44%). Unsustainable losses by any measure but this wave enabled the mission in two waves to achieve the neutralization of 5 of the 9 American battleships that were present at the beginning of the strike.
For Yamaguchi the most sobering part of the losses of the first two waves is that airborne strike commander (Fuchida), an old friend and classmate, as well as 4 of the 6 Lieutenant Commanders leading it are dead, including another of the planners, Lieutenant Commander Murata. His torpedo bombers are now being led by Lieutenants instead of Lieutenant Commanders and other officer casualties were equally severe. His fighters too lost some valuable leaders, although thankfully not as many and at a lower percentage (only 2 lost).
The Third Wave was supported to neutralize the American bomber base, which the damage to the Shokaku and Akagi makes clear was a failure. However, reports indicate 2 more battleships were damaged, as were 4 cruisers, and perhaps those cruisers even lost one or more sunk. Another 39 bombers lost, 41 more written off, which is a painful loss indeed especially as again losses of squadron leaders has been severe. The 17 fighters lost and 6 more written off were equally serious losses and only the damage inflicted (six heavy ships knocked out or possibly sunk) makes the loss acceptable at all. In all 103 aircraft lost or wrecked out of 180 aircraft committed and 31% aircrew lost and almost 60% of the aircraft expended. A terribly stiff price for neutralizing 2 more battleships and 4 cruisers. Yamaguchi is convinced this wave was a terrible mistake.
In all, the attack has cost the First Air Fleet lost 131 aircraft and their aircrew lost en route to, over or returning from their targets. Another 71 aircraft are so badly damaged as to be write offs. Then a carrier was sunk and two more suffered damage, one of which is effectively out of the battle. Along with the valuable aircraft aboard the Soryu, the loss of the ship and many of its very experienced crew is a hard blow. Another 10 valuable pilots died with the ship, along with the other 400 men who died with her and none of the aircrew that were rescued are really fit for duty after their dunking in the cold North Pacific. The hit on the Shokaku gutted part of the hanger deck and and also accounted for a few aircraft on deck. Luckily that hit did not kill or injure any of the valuable pilots. The good news was that the damage to the Akagi did not include any aircraft or aircrew, although Genda being out of the fight is a serious problem. Overall the first day has cost the fleet 2 carriers sunk or knocked out of action (33%), 262 aircraft shot down or wrecked (63%) and 141 valuable pilots (34%) including most of the his best leaders. To knock 7 battleships out of action along with some cruisers and destroyers. A victory, but one that cannot be repeated with that loss rate. Luckily there are spares aboard the surviving undamaged carriers, enough so that the damaged aircraft that are not write offs can be repaired and another 30 aircraft (10 of each type) are added to his strength. In his report he suggests that in the future the dive bombers lead off any attack to weaken enemy defenses before the more vulnerable torpedo aircraft go in.
In the morning it will be time to shuffle aircraft around and send a courier to the Tone with the report.
Preparing for the next battle
December 7 Night – December 8 Evening
Japanese Forces
Japanese striking Force
1030 hours 180 miles NNW Oahu (150 NM due north Kaui) (final recovery position)
speed 24 knots for 12 hours (2230 hours) 120 NM west
course change N 27 knots (2230 hours – 0830 hours) puts them 500 miles north of Nihoa Island, meets with supply group 2. Destroyers refuel 0900 – 1700 hours
Position is 700 miles from Oahu and 800 miles from Midway Island, just out of air search range for both. After refueling, the Zuikaku, 3 destroyers, 5 fleet oilers (from supply group 1) all head for Japan at 12 knots (reaching Japan on December 21). Remainder of the Striking Force steams toward Midway beginning 1700 hours December 8 at 21 knots, which will put them strike range of Midway Island on the afternoon of December 9, and the bombardment force can reach the island after dark.
Midway Invasion Force and Supply Group 3 is 600 miles west of Midway Island heading due east heading directly for Midway as of dusk on December 8. This fleet accelerates to its best speed of 15 knots just after dark, which will place them off Midway the morning of December 10.
The Japanese also have extensive air search out, with 24 Kate's flying in pairs out in a search pattern extending 180 degrees from the fleets course and extending out 200 miles, but sea conditions initially preclude using the float planes after they are recovered on December 7. It is not until the fleet refuels in the middle part of the day on December 8 that the float planes are again launched, and it is also the first chance that Yamaguchi has to send his report to Yamamoto. Aircraft, pilots and flight leaders are regrouped so that the Hiryu, Kaga, Shokaku, Akagi each have relatively balanced air groups, while the Zuikaku is sent toward home with minimal aircraft and aircrew as well as most of the survivors of the Soryu.
By December 9 the Japanese are deployed as follows:
Kido Butai (First Air Fleet) (Striking Force)
Carriers Akagi, Kaga, Soryu, Hiryu, Shokaku, Zuikaku, battleships Hiei Haruna, Kongo, Kirishima, CA Tone (fleet flag: Yamamoto), , Chikuma, CL Abukuma, 14 destroyers, 12 fleet oilers,
detached
Refueling Group 1 – 3 oilers, 1 destroyer (en route to Japan after refueling fleet on December 6)
Refueling Group 2 – 5 oilers, 3 destroyers, CV Zuikaku (en route to Japan after refueling December 8)
Refueling Group 3 – 2 oilers, 1 destroyer (with Midway Invasion Force)
Refueling Group 4 – 2 oilers, 2 destroyers (off Marcus Island)
Midway Island Assault Force
CA Aoba, Furutaka, Kako, Kinugasa, 4 destroyers, 2 gunboats, 6 submarine chasers, 1 seaplane tender, 2 tenders, 9 transports, South Sea Force (4,886 troops)
losses:
CVL Soryu sunk, knocked out of action CV Zuikaku, damaged: CV Akagi
aircraft losses: 262 aircraft, 141 pilots all causes
The Japanese strike force left Japan with 459 aircraft (including spares). With only four available flight decks and serious losses among all squadrons, Admiral Yamaguchi orders a reorganization while the fleet is refueling on December 8. The Fleet has 187 fighter and strike aircraft remaining as of December 8 consisting of 91 fighters, 40 dive bombers, and 56 torpedo bombers after spare aircraft are assembled and including those lost aboard the Soryu and Zuikaku. . The Zuikaku is sent home with 11 fighters and 8 torpedo bombers to provide basic defense of its task group, while the remaining aircraft are divided among the 4 remaining carriers, giving each 20 fighters, 12 torpedo bombers and 10 dive bombers. Also available are 12 Jake float planes aboard the Tone and Chikuma, while the battleships each carry 2 Pete float planes. However heavy seas and the high speed of the Japanese movements prevent the use of any of the float planes after noon on the 7th, as the Fleet cannot afford the time needed to recover them if launched. Luckily the weather improved some on December 8, and it is hoped the weather will cooperate the next two days.
In the view of the fleet staff this is an alarmingly low number of strike and fighter aircraft to face potentially 2 American carriers and possibly two others if all of the American carriers are in the area, which between them would have according to estimates 92 fighters and 172 strike aircraft. But the entire expedition is a gamble, and Yamamoto believes firmly that now is the time to hit the Americans again while they are still trying to shake off peacetime lethargy and inexperience. At worst the Americans have a slight edge in aircraft and potentially the Japanese can catch and sink the more likely grouping of 2 American carriers as Yamamoto believes that at least one is on the West Coast and probably two.
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